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 {

	private static Scanner sc;

	public static void main(String[] args){
		sc = new Scanner(System.in);
		String line = sc.nextLine();
		for(int i=0;i<line.length();i++){
			if(Character.isLowerCase(line.charAt(i))){
				System.out.print(Character.toUpperCase(line.charAt(i)));
			}else System.out.print(Character.toLowerCase(line.charAt(i)));
		}
		System.out.println();
	}
}