diff --git a/profile_results.txt b/profile_results.txt
new file mode 100644
index 0000000..daaa4b6
--- /dev/null
+++ b/profile_results.txt
@@ -0,0 +1,35 @@
+         3008 function calls in 0.015 seconds
+
+   Ordered by: cumulative time
+
+   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
+        1    0.000    0.000    0.015    0.015 D:\python\作业\输出.py:40(main)
+       33    0.000    0.000    0.014    0.000 D:\python\作业\输出.py:31(save_to_file)
+       34    0.011    0.000    0.011    0.000 {built-in method io.open}
+       34    0.003    0.000    0.003    0.000 {method '__exit__' of '_io._IOBase' objects}
+       33    0.000    0.000    0.001    0.000 D:\python\作业\输出.py:18(find_top_sentences_by_keyword)
+     1650    0.001    0.000    0.001    0.000 {method 'lower' of 'str' objects}
+        1    0.000    0.000    0.000    0.000 D:\python\作业\输出.py:6(read_file)
+      825    0.000    0.000    0.000    0.000 {method 'count' of 'str' objects}
+      105    0.000    0.000    0.000    0.000 {method 'write' of '_io.TextIOWrapper' objects}
+        1    0.000    0.000    0.000    0.000 {method 'read' of '_io.TextIOWrapper' objects}
+        1    0.000    0.000    0.000    0.000 D:\python\作业\输出.py:12(split_into_sentences)
+       33    0.000    0.000    0.000    0.000 {method 'sort' of 'list' objects}
+       33    0.000    0.000    0.000    0.000 <frozen codecs>:186(__init__)
+        1    0.000    0.000    0.000    0.000 D:\python\Lib\re\__init__.py:198(split)
+        1    0.000    0.000    0.000    0.000 D:\python\作业\输出.py:15(<listcomp>)
+        1    0.000    0.000    0.000    0.000 {method 'split' of 're.Pattern' objects}
+       33    0.000    0.000    0.000    0.000 D:\python\作业\输出.py:27(<listcomp>)
+        1    0.000    0.000    0.000    0.000 <frozen codecs>:319(decode)
+        1    0.000    0.000    0.000    0.000 {built-in method _codecs.utf_8_decode}
+       47    0.000    0.000    0.000    0.000 D:\python\作业\输出.py:26(<lambda>)
+       54    0.000    0.000    0.000    0.000 {method 'strip' of 'str' objects}
+       33    0.000    0.000    0.000    0.000 <frozen codecs>:214(setstate)
+       47    0.000    0.000    0.000    0.000 {method 'append' of 'list' objects}
+        1    0.000    0.000    0.000    0.000 D:\python\Lib\re\__init__.py:272(_compile)
+        1    0.000    0.000    0.000    0.000 <frozen codecs>:309(__init__)
+        1    0.000    0.000    0.000    0.000 {built-in method builtins.isinstance}
+        1    0.000    0.000    0.000    0.000 <frozen codecs>:260(__init__)
+        1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}
+
+