[백준] 15964번

import java.util.*;
import java.io.*;

public class Main {
   public static void main(String[] args) throws IOException {
      Scanner sc = new Scanner(System.in);

      long A = sc.nextLong();
      long B = sc.nextLong();

      long ans = (A + B) * (A - B);
      System.out.println(ans);
   }
}