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 str = sc.nextLine();
        char[] ch = str.toCharArray();

        for(int i = 0; i < ch.length; i++) {
        	if(Character.isLowerCase(ch[i])) {

        		ch[i] = Character.toUpperCase(ch[i]);

        	} else if(Character.isUpperCase(ch[i])) {

        		ch[i] = Character.toLowerCase(ch[i]);

        	}
        }

        System.out.println(new String(ch));
    }
}
