Start: Apr, 17, 2017 10:00:00
Python程序设计基础培训第二次作业
End: Apr, 23, 2017 14:00:00
Time elapsed:
Time remaining:
Problem_ID: E
Result: Accepted
Time: 123ms
Memory: 21432kB
Author: 13105720657
In contest: 1086 
x=raw_input()
if 64<ord(x)<91:
    print chr(ord(x)+32)
if 96<ord(x)<123:
    print chr(ord(x)-32)