auto save

a.py

+import time
+from time import time
+print('-'*50)
+StartTime=time()
+# 
+for x in range(4400):
+    if (x-100)*20+(100-80)*30 == 4400*0.3:
+        print(x)
+''''''
+EndTime=time()
+print('-'*50)
+print('运行时间：'+str(EndTime-StartTime),'秒')