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 scanner = new Scanner(System.in);
        char[] list = scanner.nextLine().toCharArray();
        for(char a:list)
            if(Character.isLowerCase(a))
                System.out.print(Character.toUpperCase(a));
            else
                System.out.print(Character.toLowerCase(a));
        System.out.println();
    }
}
