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: Accepted)

s=input()
for c in s:
	a=(ord(c))
	if a>=65 and a<=90:
		a+=32
		print(chr(a),end='')
	elif a>=97 and a<=97+25:
		a-=32
		print(chr(a),end='')
	else:
		print(c,end='')
print()