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[]) {
		try (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("");
		}
	}
}

