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.
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scn = new Scanner(System.in);
        char[] ary = scn.nextLine().toCharArray();
        for(char elm : ary) {
            if(Character.isLowerCase(elm)) {
                System.out.print(Character.toUpperCase(elm));
            } else {
                System.out.print(Character.toLowerCase(elm));
            }
        }
        System.out.println();
    }
}