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);
		String s=sc.nextLine();

		for(int i=0;i<s.length();i++) {
			char c=s.charAt(i);
			if(Character.isLowerCase(c)) {
				System.out.print(Character.toUpperCase(c));
			}else {
				System.out.print(Character.toLowerCase(c));
			}
			
		}
		System.out.println();
	}
}
