Problem:
Toggling Cases

Write a program which converts uppercase/lowercase letters to lowercase/uppercase for a given string.

Input

A string is given in a line.

Output

Print the converted string in a line. Note that you do not need to convert any characters other than alphabetical letters.

Constraints

The length of the input string < 1200

Sample Input

fAIR, LATER, OCCASIONALLY CLOUDY.

Sample Output

Fair, later, occasionally cloudy.

Solution in Python3 (judge verdict: WA: Presentation Error)

import sys

message = str(input())

for c in message:
	order = ord(c)
	if order >= 65 and order <= 90:
		sys.stdout.write(chr(order + 32))
	elif order >= 97 and order <= 122:
		sys.stdout.write(chr(order - 32))
	else:
		sys.stdout.write(c)