Problem:
Toggling Cases

Write a program which converts uppercase/lowercase letters to lowercase/uppercase for a given string.

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.

Constraints

The length of the input string < 1200

Sample Input

fAIR, LATER, OCCASIONALLY CLOUDY.

Sample Output

Fair, later, occasionally cloudy.

Solution in JAVA (judge verdict: Accepted)


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

	public static void main(String[] args) throws IOException {


		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String input = br.readLine();


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


			}



		}System.out.println();



		//??????


	}

}