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 sc = new Scanner(System.in);
		char[] text = sc.nextLine().toCharArray();
		
		for(int i=0; i<text.length; i++) {
			if(Character.isUpperCase(text[i])) {
				text[i] = Character.toLowerCase(text[i]);
			} else {
				text[i] = Character.toUpperCase(text[i]);
			}
		}
		
		System.out.println(text);
	}

}