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 str = sc.nextLine();
        for(int i=0;i<str.length();i++){
            char c = str.charAt(i);
            if(c>='a'&&c<='z') System.out.printf("%c",c-32);
            else if(c>='A'&&c<='Z') System.out.printf("%c",c+32);
            else System.out.printf("%c",c);
        }
        System.out.println();
        sc.close();
    }
}
