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.*;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String line =sc.nextLine();
		char[] ar = line.toCharArray();
		for(char ch:ar){
			if(ch>='A'&&ch<='Z'){
				System.out.printf("%c",ch+32);
			}else if(ch>='a'&&ch<='z'){
				System.out.printf("%c",ch-32);
			}else{
				System.out.print(ch);
			}
		}
		System.out.println();
	}
}