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

Constraints

* The length of the input string < 1200

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.

Example

Input

fAIR, LATER, OCCASIONALLY CLOUDY.


Output

Fair, later, occasionally cloudy.
#include <iostream>
using namespace std;
int main() {
	
	string a;
	
	getline(cin, a);
	
	for (int i=0; i<a.size(); i++){
		if (a[i] >= 'A' && a[i] <= 'Z'){
			a[i] = a[i]+32;
		} else if (a[i] >= 'a' && a[i] <= 'z'){
			a[i] = a[i]-32;
		} 
	}
	cout << a  << endl;
		
	return 0;
}
