import java.util.Scanner;

// The main method must be ihe main method must be in a class named "Main".
public class Main {
    public static void main(String[] args) {
        Scanner teclado = new Scanner(System.in);

        System.out.println("Ingrese primer numero entero");
        int a = teclado.nextInt();
        System.out.println("Ingrese segundo nmero entero");
        int b = teclado.nextInt();

        System.out.println("===Menu===");
        System.out.println("1. Suma");
        System.out.println("2. Resta ");
        System.out.println("3. Mutiplicacion ");
        System.out.println("4. Division ");
        System.out.println("Ingresa numero para la operacion");
        int num = teclado.nextInt();

        if (num == 1) {
            System.out.println("La suma es: " + (a+b));
        } else if (num == 2) {
            System.out.println("La resta es: " + (a-b));
        } else if (num == 3) {
            System.out.println("La multplicacion es: " + (a*b));
        } else if (num == 4) {
            if (b == 0) {
            System.out.println("No es posible dividir en 0");
            } else {
                System.out.println("La division es: " + ((double) a/b));
            }
        }

        
    }
}