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 scan = new Scanner(System.in);
        String string = scan.nextLine();

        for (char c : string.toCharArray()) {
            System.out.print(Character.isUpperCase(c)?
                    Character.toLowerCase(c) : Character.toUpperCase(c));
        }
        System.out.println();
    }
}