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.Scanner;
public class Main{
	public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine();
        for(int i = 0; i < S.length(); i++){
            char x = S.charAt(i);
            char y = ' ';
            if(Character.isLowerCase(x)) y = Character.toUpperCase(x);
            else y = Character.toLowerCase(x);
            System.out.print(y); 
        }
        sc.close();
        System.out.println("");
    }
}

