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 S = sc.nextLine();
		for (int i = 0; i < S.length(); i++) {
		    if (Character.isUpperCase(S.charAt(i))) {
		        System.out.print(Character.toLowerCase(S.charAt(i)));
		    } else {
		        System.out.print(Character.toUpperCase(S.charAt(i)));
		    }
		}
		System.out.println("");
    }
}
