diff --git a/readme2.md b/readme2.md
index 4fffd5a..cefd654 100644
--- a/readme2.md
+++ b/readme2.md
@@ -364,16 +364,22 @@ step4输入下一个科目
 ````
 4·按选择法将数组sum的元素值排序 
 SortbyScore
-step1
-step2
-step3
+Step 1:利用循环将i赋值给k
+Step 2:用循环从i+1到n-1比较,将较小的赋给k
+Step 3:如果k与i不相等，每一课的成绩交换，总分，平均分，学号，姓名依次交换
 ````
+![排序](sortbyscore.drawio.svg)
 
-
+````
 5·按选择法将数组num的元素值按从低到高排序 
 AsSortbyNum
+````
+![num排序](mty5.drawio.svg)
+````
 6·交换法实现字符串按字典顺序排序 
 SortbyName
+````
+![字符串排序](mty6.drawio.svg)
 7.按学号查找学生成绩并显示查找结果 
 SearchbyNum
 8·按姓名的字典顺序排出成绩表 
diff --git a/sortbyscore.drawio.svg b/sortbyscore.drawio.svg
index 2058574..84296b6 100644
--- a/sortbyscore.drawio.svg
+++ b/sortbyscore.drawio.svg
@@ -1,34 +1,13 @@
-<svg host="65bd71144e" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="961px" height="1121px" viewBox="-0.5 -0.5 961 1121" content="&lt;mxfile&gt;&lt;diagram id=&quot;sMNEYgDIF7f3j9LlcQSW&quot; name=&quot;Page-1&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;">
+<svg host="65bd71144e" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="961px" height="1021px" viewBox="-0.5 -0.5 961 1021" content="&lt;mxfile&gt;&lt;diagram id=&quot;sMNEYgDIF7f3j9LlcQSW&quot; name=&quot;Page-1&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;">
     <defs/>
     <g>
-        <rect x="30" y="0" width="900" height="100" fill="none" stroke="none" pointer-events="all"/>
+        <path d="M 120 60 L 120 103.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 120 108.88 L 116.5 101.88 L 120 103.63 L 123.5 101.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="50" y="0" width="140" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
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-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 50px; margin-left: 480px;">
-                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
-                            <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
-                                Step 1:利用循环将i赋值给k
-                                <br/>
-                                Step 2:用循环从i+1到n-1比较,将较小的赋给k
-                                <br/>
-                                Step 3:如果k与i不相等，每一课的成绩交换 ，总分，平均分，学号，姓名依次交换
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="480" y="57" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
-                    Step 1:利用循环将i赋值给k...
-                </text>
-            </switch>
-        </g>
-        <path d="M 120 160 L 120 203.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 120 208.88 L 116.5 201.88 L 120 203.63 L 123.5 201.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
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-            <switch>
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-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 130px; margin-left: 51px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 30px; margin-left: 51px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 SortbyScore
@@ -36,18 +15,18 @@
                         </div>
                     </div>
                 </foreignObject>
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+                <text x="120" y="37" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     SortbyScore
                 </text>
             </switch>
         </g>
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         <g transform="translate(-0.5 -0.5)">
             <switch>
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-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 240px; margin-left: 61px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 140px; margin-left: 61px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 int i,j,k,t
@@ -55,21 +34,21 @@
                         </div>
                     </div>
                 </foreignObject>
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+                <text x="120" y="147" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     int i,j,k,t
                 </text>
             </switch>
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+        <path d="M 60 270 L 60 533.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 538.88 L 56.5 531.88 L 60 533.63 L 63.5 531.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="60" y="210" width="130" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
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         <g transform="translate(-0.5 -0.5)">
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+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 102px; height: 1px; padding-top: 240px; margin-left: 74px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 i=0 to n-2
@@ -77,16 +56,16 @@
                         </div>
                     </div>
                 </foreignObject>
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+                <text x="125" y="247" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     i=0 to n-2
                 </text>
             </switch>
         </g>
-        <rect x="235" y="310" width="70" height="40" fill="none" stroke="none" pointer-events="all"/>
+        <rect x="235" y="210" width="70" height="40" fill="none" stroke="none" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 330px; margin-left: 270px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 230px; margin-left: 270px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
                                 next
@@ -94,18 +73,18 @@
                         </div>
                     </div>
                 </foreignObject>
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+                <text x="270" y="237" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     next
                 </text>
             </switch>
         </g>
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+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 240px; margin-left: 351px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 k=i
@@ -113,20 +92,20 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="410" y="347" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="410" y="247" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     k=i
                 </text>
             </switch>
         </g>
-        <path d="M 420 490 L 420 633.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 420 638.88 L 416.5 631.88 L 420 633.63 L 423.5 631.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 490 460 L 593.63 460" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 598.88 460 L 591.88 463.5 L 593.63 460 L 591.88 456.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="350" y="430" width="140" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 420 390 L 420 533.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 420 538.88 L 416.5 531.88 L 420 533.63 L 423.5 531.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 490 360 L 593.63 360" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 598.88 360 L 591.88 363.5 L 593.63 360 L 591.88 356.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="350" y="330" width="140" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 460px; margin-left: 351px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 360px; margin-left: 351px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 j = i+1 to n-1
@@ -134,20 +113,20 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="420" y="467" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="420" y="367" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     j = i+1 to n...
                 </text>
             </switch>
         </g>
-        <path d="M 460 680 L 603.63 680" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 608.88 680 L 601.88 683.5 L 603.63 680 L 601.88 676.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 380 680 L 161.21 375.17" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 158.15 370.91 L 165.08 374.55 L 161.21 375.17 L 159.39 378.64 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 420 640 L 460 680 L 420 720 L 380 680 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 460 580 L 603.63 580" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 608.88 580 L 601.88 583.5 L 603.63 580 L 601.88 576.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 380 580 L 161.21 275.17" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 158.15 270.91 L 165.08 274.55 L 161.21 275.17 L 159.39 278.64 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 420 540 L 460 580 L 420 620 L 380 580 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 680px; margin-left: 381px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 580px; margin-left: 381px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 k!=i
@@ -155,16 +134,16 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="420" y="687" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="420" y="587" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     k!=i
                 </text>
             </switch>
         </g>
-        <rect x="525" y="430" width="70" height="40" fill="none" stroke="none" pointer-events="all"/>
+        <rect x="525" y="330" width="70" height="40" fill="none" stroke="none" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 450px; margin-left: 560px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 350px; margin-left: 560px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
                                 next
@@ -172,20 +151,20 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="560" y="457" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="560" y="357" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     next
                 </text>
             </switch>
         </g>
-        <path d="M 642.5 497.5 L 574.82 555.84" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 570.85 559.27 L 573.86 552.05 L 574.82 555.84 L 578.43 557.35 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 727.5 497.5 L 785.5 555.5" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 789.21 559.21 L 781.78 556.73 L 785.5 555.5 L 786.73 551.78 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 685 385 L 770 460 L 685 535 L 600 460 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 642.5 397.5 L 574.82 455.84" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 570.85 459.27 L 573.86 452.05 L 574.82 455.84 L 578.43 457.35 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 727.5 397.5 L 785.5 455.5" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 789.21 459.21 L 781.78 456.73 L 785.5 455.5 L 786.73 451.78 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 685 285 L 770 360 L 685 435 L 600 360 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 168px; height: 1px; padding-top: 460px; margin-left: 601px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 168px; height: 1px; padding-top: 360px; margin-left: 601px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 比较
@@ -193,16 +172,16 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="685" y="467" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="685" y="367" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     比较
                 </text>
             </switch>
         </g>
-        <rect x="585" y="490" width="40" height="40" fill="none" stroke="none" pointer-events="all"/>
+        <rect x="585" y="390" width="40" height="40" fill="none" stroke="none" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 510px; margin-left: 605px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 410px; margin-left: 605px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
                                 F
@@ -210,16 +189,16 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="605" y="517" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="605" y="417" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     F
                 </text>
             </switch>
         </g>
-        <rect x="760" y="500" width="40" height="40" fill="none" stroke="none" pointer-events="all"/>
+        <rect x="760" y="400" width="40" height="40" fill="none" stroke="none" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 520px; margin-left: 780px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 420px; margin-left: 780px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
                                 T
@@ -227,18 +206,18 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="780" y="527" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="780" y="427" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     T
                 </text>
             </switch>
         </g>
-        <path d="M 740 590 L 576.37 590" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 571.12 590 L 578.12 586.5 L 576.37 590 L 578.12 593.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="740" y="560" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 740 490 L 576.37 490" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 571.12 490 L 578.12 486.5 L 576.37 490 L 578.12 493.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="740" y="460" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 590px; margin-left: 741px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 490px; margin-left: 741px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 k=j
@@ -246,19 +225,19 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="800" y="597" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="800" y="497" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     k=j
                 </text>
             </switch>
         </g>
-        <path d="M 545.4 555.55 L 494.11 494.86" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 490.72 490.85 L 497.91 493.94 L 494.11 494.86 L 492.57 498.46 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <ellipse cx="557.5" cy="570" rx="17.5" ry="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
-        <rect x="510" y="640" width="40" height="40" fill="none" stroke="none" pointer-events="all"/>
+        <path d="M 545.4 455.55 L 494.11 394.86" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 490.72 390.85 L 497.91 393.94 L 494.11 394.86 L 492.57 398.46 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <ellipse cx="557.5" cy="470" rx="17.5" ry="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <rect x="510" y="540" width="40" height="40" fill="none" stroke="none" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 660px; margin-left: 530px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 560px; margin-left: 530px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
                                 T
@@ -266,20 +245,20 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="530" y="667" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="530" y="567" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     T
                 </text>
             </switch>
         </g>
-        <path d="M 730 680 L 813.63 680" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 818.88 680 L 811.88 683.5 L 813.63 680 L 811.88 676.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 670 710 L 670 773.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 670 778.88 L 666.5 771.88 L 670 773.63 L 673.5 771.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="610" y="650" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 730 580 L 813.63 580" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 818.88 580 L 811.88 583.5 L 813.63 580 L 811.88 576.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 670 610 L 670 673.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 670 678.88 L 666.5 671.88 L 670 673.63 L 673.5 671.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="610" y="550" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 680px; margin-left: 611px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 580px; margin-left: 611px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 t=0 to m-1
@@ -287,16 +266,16 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="670" y="687" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="670" y="587" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     t=0 to m-1
                 </text>
             </switch>
         </g>
-        <rect x="745" y="650" width="70" height="40" fill="none" stroke="none" pointer-events="all"/>
+        <rect x="745" y="550" width="70" height="40" fill="none" stroke="none" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 670px; margin-left: 780px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 570px; margin-left: 780px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
                                 next
@@ -304,19 +283,19 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="780" y="677" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="780" y="577" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     next
                 </text>
             </switch>
         </g>
-        <path d="M 855 700 L 736.36 695.25" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 731.12 695.04 L 738.25 691.83 L 736.36 695.25 L 737.97 698.82 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="820" y="650" width="140" height="50" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
-        <path d="M 834 650 L 834 700 M 946 650 L 946 700" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 855 600 L 736.36 595.25" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 731.12 595.04 L 738.25 591.83 L 736.36 595.25 L 737.97 598.82 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="820" y="550" width="140" height="50" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 834 550 L 834 600 M 946 550 L 946 600" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 110px; height: 1px; padding-top: 675px; margin-left: 835px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 110px; height: 1px; padding-top: 575px; margin-left: 835px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 交换分数
@@ -324,19 +303,19 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="890" y="682" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="890" y="582" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     交换分数
                 </text>
             </switch>
         </g>
-        <path d="M 680 840 L 680 883.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 680 888.88 L 676.5 881.88 L 680 883.63 L 683.5 881.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="610" y="780" width="140" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
-        <path d="M 624 780 L 624 840 M 736 780 L 736 840" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 680 740 L 680 783.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 680 788.88 L 676.5 781.88 L 680 783.63 L 683.5 781.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="610" y="680" width="140" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 624 680 L 624 740 M 736 680 L 736 740" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 110px; height: 1px; padding-top: 810px; margin-left: 625px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 110px; height: 1px; padding-top: 710px; margin-left: 625px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 交换总分
@@ -344,19 +323,19 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="680" y="817" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="680" y="717" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     交换总分
                 </text>
             </switch>
         </g>
-        <path d="M 680 930 L 680 973.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 680 978.88 L 676.5 971.88 L 680 973.63 L 683.5 971.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="600" y="880" width="160" height="50" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
-        <path d="M 616 880 L 616 930 M 744 880 L 744 930" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 680 830 L 680 873.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 680 878.88 L 676.5 871.88 L 680 873.63 L 683.5 871.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="600" y="780" width="160" height="50" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 616 780 L 616 830 M 744 780 L 744 830" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 126px; height: 1px; padding-top: 905px; margin-left: 617px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 126px; height: 1px; padding-top: 805px; margin-left: 617px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 交换平均分
@@ -364,19 +343,19 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="680" y="912" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="680" y="812" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     交换平均分
                 </text>
             </switch>
         </g>
-        <path d="M 685 1030 L 685 1073.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 685 1078.88 L 681.5 1071.88 L 685 1073.63 L 688.5 1071.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="600" y="980" width="170" height="50" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
-        <path d="M 617 980 L 617 1030 M 753 980 L 753 1030" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 685 930 L 685 973.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 685 978.88 L 681.5 971.88 L 685 973.63 L 688.5 971.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="600" y="880" width="170" height="50" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 617 880 L 617 930 M 753 880 L 753 930" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 134px; height: 1px; padding-top: 1005px; margin-left: 618px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 134px; height: 1px; padding-top: 905px; margin-left: 618px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 交换学号
@@ -384,19 +363,19 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="685" y="1012" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="685" y="912" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     交换学号
                 </text>
             </switch>
         </g>
-        <path d="M 610 1080 L 96.25 375.15" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 93.16 370.9 L 100.11 374.5 L 96.25 375.15 L 94.45 378.62 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="610" y="1080" width="160" height="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
-        <path d="M 626 1080 L 626 1120 M 754 1080 L 754 1120" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 610 980 L 96.25 275.15" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 93.16 270.9 L 100.11 274.5 L 96.25 275.15 L 94.45 278.62 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="610" y="980" width="160" height="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 626 980 L 626 1020 M 754 980 L 754 1020" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 126px; height: 1px; padding-top: 1100px; margin-left: 627px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 126px; height: 1px; padding-top: 1000px; margin-left: 627px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 交换姓名
@@ -404,16 +383,16 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="690" y="1107" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="690" y="1007" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     交换姓名
                 </text>
             </switch>
         </g>
-        <rect x="300" y="535" width="40" height="40" fill="none" stroke="none" pointer-events="all"/>
+        <rect x="300" y="435" width="40" height="40" fill="none" stroke="none" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 555px; margin-left: 320px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 455px; margin-left: 320px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
                                 F
@@ -421,16 +400,16 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="320" y="562" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="320" y="462" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     F
                 </text>
             </switch>
         </g>
-        <rect x="0" y="640" width="120" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <rect x="0" y="540" width="120" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 670px; margin-left: 1px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 570px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 24px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 return
@@ -438,7 +417,7 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="60" y="677" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
+                <text x="60" y="577" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="24px" text-anchor="middle">
                     return
                 </text>
             </switch>