Start: Nov, 12, 2017 10:00:00
2017秋Python程序设计基础培训第二次作业
End: Nov, 19, 2017 12:00:00
Time elapsed:
Time remaining:
Problem_ID: E
Result: Accepted
Time: 95ms
Memory: 24436kB
Author: zwh
In contest: 1122 
while True:
    try:
        a=input()
        print(a.lower())
    except EOFError:
        break