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('a' <= c && c <= 'z') System.out.print((char)(c - 32));
			else if('A' <= c && c <= 'Z') System.out.print((char)(c + 32));
			else System.out.print(c);
		}
		System.out.println();
	}
}

