P_1161.java

package p_1161;


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

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

        int nro1, nro2;

        nro1 = sc.nextInt();
        nro2 = sc.nextInt();

        long result1 = makeFatorial(nro1);
        long result2 = makeFatorial(nro2);
        long result = result1+result2;

        System.out.printf("%d", result);
    }

    static long makeFatorial(int nro){
        long fat=1l;
        for(int i=1;i<=nro;i++){
            fat *= i;
        }
        return fat;
    }
}