1161.java

import java.io.IOException;
import java.math.BigInteger;
import java.util.Scanner;

public class Main {

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

        Scanner escanercito = new Scanner(System.in);
        while (escanercito.hasNextInt()){
            int number1, number2;
            number1 = escanercito.nextInt();
            number2 = escanercito.nextInt();
            System.out.println(bigSum(number1,number2));
        }


        System.out.println(fac(7));
    }

    public static BigInteger fac(int numero){
        if(numero == 0){
            return BigInteger.ONE;
        }
        return BigInteger.valueOf(numero).multiply(fac(numero - 1));
    }

    public static BigInteger bigSum(int number1, int number2){
        BigInteger bigSum = fac(number1).add(fac(number2));
        return bigSum;
    }
}