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)) {
        ch = Character.toUpperCase(line.charAt(i));
      } else {
        ch = Character.toLowerCase(line.charAt(i));
      }
      answer += ch;
    }
    System.out.println(answer);
    }
  }
}

