diff --git a/main.drawio.svg b/main.drawio.svg
index f39afc7..c620339 100644
--- a/main.drawio.svg
+++ b/main.drawio.svg
@@ -1,15 +1,15 @@
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+        <path d="M 430 620 L 513.63 620" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 518.88 620 L 511.88 623.5 L 513.63 620 L 511.88 616.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="310" y="590" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
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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: 620px; margin-left: 311px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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                                 <font style="font-size: 24px;">
@@ -19,16 +19,16 @@
                         </div>
                     </div>
                 </foreignObject>
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+                <text x="370" y="624" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
                     main
                 </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: 620px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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                                 <font style="font-size: 24px;">
@@ -38,16 +38,16 @@
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                     </div>
                 </foreignObject>
-                <text x="60" y="744" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                <text x="60" y="624" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
                     choice
                 </text>
             </switch>
         </g>
-        <rect x="0" y="850" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <rect x="0" y="730" 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>
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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: 880px; 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: 760px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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                                 <font style="font-size: 24px;">
@@ -57,16 +57,16 @@
                         </div>
                     </div>
                 </foreignObject>
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+                <text x="60" y="764" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
                     confirm
                 </text>
             </switch>
         </g>
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+        <rect x="0" y="450" 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>
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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: 600px; 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: 480px; 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: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 <font style="font-size: 24px;">
@@ -76,16 +76,16 @@
                         </div>
                     </div>
                 </foreignObject>
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+                <text x="60" y="484" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
                     menu
                 </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: 900px; 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: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 <font style="font-size: 24px;">
@@ -95,16 +95,16 @@
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                     </div>
                 </foreignObject>
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+                <text x="60" y="904" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
                     quit
                 </text>
             </switch>
         </g>
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+        <rect x="0" y="310" 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>
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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: 460px; 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: 340px; 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: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 <font style="font-size: 24px;">
@@ -119,151 +119,159 @@
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                     </div>
                 </foreignObject>
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+                <text x="60" y="344" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
                     init
                 </text>
             </switch>
         </g>
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-                                    SortbyScore
-                                </div>
+                                <font style="font-size: 14px;">
+                                    ReadScore
+                                </font>
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="605" y="394" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    SortbyScore
+                <text x="605" y="34" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    ReadScore
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-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    AverSumofEveryStudent
-                                </div>
+                                AverSumofEveryCourse
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="605" y="274" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    AverSumofEveryStudent
+                <text x="605" y="154" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    AverSumofEveryCourse
                 </text>
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                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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-                                <div style="color: rgb(212, 212, 212); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    <span style="background-color: rgb(0, 0, 0);">
-                                        AverSumofEveryCourse
-                                    </span>
-                                </div>
+                                AverSumofEveryStudent
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="605" y="154" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    AverSumofEveryCourse
+                <text x="605" y="274" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    AverSumofEveryStudent
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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: 168px; height: 1px; padding-top: 390px; margin-left: 521px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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-                                <font style="font-size: 14px;">
-                                    ReadScore
-                                </font>
+                                SortbyScore
                             </div>
                         </div>
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                 </foreignObject>
-                <text x="605" y="34" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    ReadScore
+                <text x="605" y="394" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    SortbyScore
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         <g transform="translate(-0.5 -0.5)">
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                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    SortbyScore
-                                </div>
+                                AsSortbyNum
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="605" y="514" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    SortbyScore
+                <text x="605" y="504" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    AsSortbyNum
                 </text>
             </switch>
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+        <rect x="520" y="590" width="170" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
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+                    <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: 620px; margin-left: 521px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    AsSortbyNum
-                                </div>
+                                SortbyName
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="605" y="634" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    AsSortbyNum
+                <text x="605" y="624" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    SortbyName
                 </text>
             </switch>
         </g>
-        <rect x="520" y="710" width="170" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <rect x="520" y="700" width="170" height="60" 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: 168px; height: 1px; padding-top: 730px; margin-left: 521px;">
                         <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: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    SortbyName
-                                </div>
+                                SortbyNum
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="605" y="744" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    SortbyName
+                <text x="605" y="734" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    SortbyNum
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@@ -274,15 +282,13 @@
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                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    SearchbyNum
-                                </div>
+                                SearchbyName
                             </div>
                         </div>
                     </div>
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-                    SearchbyNum
+                    SearchbyName
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@@ -293,15 +299,13 @@
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-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    SearchbyName
-                                </div>
+                                StatisticAnalysis
                             </div>
                         </div>
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                 <text x="605" y="974" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    SearchbyName
+                    StatisticAnalysis
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@@ -312,15 +316,13 @@
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                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    StatisticAnalysis
-                                </div>
+                                PrintScore
                             </div>
                         </div>
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                 <text x="605" y="1094" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    StatisticAnalysis
+                    PrintScore
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@@ -331,15 +333,13 @@
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-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    PrintScore
-                                </div>
+                                WritetoFile
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                         </div>
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                 <text x="605" y="1214" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    PrintScore
+                    WritetoFile
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@@ -350,61 +350,16 @@
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-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    WritetoFile
-                                </div>
+                                ReadfromFile
                             </div>
                         </div>
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                 <text x="605" y="1334" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    WritetoFile
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-                                <div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px;">
-                                    ReadfromFile
-                                </div>
-                            </div>
-                        </div>
-                    </div>
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                     ReadfromFile
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