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.*;

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++) {
                if (Character.isUpperCase(S.charAt(i))) {
                    System.out.print(Character.toLowerCase(S.charAt(i)));
                } else {
                    System.out.print(Character.toUpperCase(S.charAt(i)));
                }
            }
            System.out.println("");
    }
}
