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;

class Main{
	public static void main(String[] args){

		Scanner sc = new Scanner(System.in);

		String str = sc.nextLine();
		char[] moji = str.toCharArray();
		
		for(int i=0; i < moji.length; i++){
			if(moji[i] >= 'A' && moji[i] <= 'Z' ){
				moji[i] += 0x20;
			}
			else if(moji[i] >= 'a' && moji[i] <= 'z' ){
				moji[i] -= 0x20;
			}
			
		}
		

		System.out.println(moji);
		
	}
}
