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