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[]){
try(Scanner sc =new Scanner(System.in)){
 String line = sc.nextLine();
 String answer = "";
     int length =line.length();
     for(int i=0;i<length;i++){
         char ch = line.charAt(i);
         if(Character.isLowerCase(ch)){
             answer=answer+Character.toUpperCase(ch);
         }else answer=answer+Character.toLowerCase(ch);
     }
        System.out.println(answer);
    }
    }
}


        
