Openjudge: upper and lower case letters are interchanged

describe

Replace all uppercase letters in a string with lowercase letters , At the same time, replace lower case letters with upper case letters .

Input

The input line ： The string to be exchanged .

Output

Output one line ： String that completes the interchange （ String length is less than 80）.

The sample input

If so, you already have a Google Account. You can sign in on the right. 

Sample output

iF SO, YOU ALREADY HAVE A gOOGLE aCCOUNT. yOU CAN SIGN IN ON THE RIGHT. 

Code

s = input()
for c in s:
    if 'a' <= c <= 'z':
        print(chr(ord(c) - 32 ),end="")
    elif 'A' <= c <= 'Z':
        print(chr(ord(c) + 32),end="")
    else:
        print(c,end="")