// recursive gcd calculation
#include <iostream>
using namespace std;

int gcd(int x, int y)
{
    if (x % y == 0)
        return y;
    else
        return gcd(y, x % y);
}

int main()
{
    int x,y;
    cout << "Ingresa dos numeros enteros positivos: ";
    cin >> x >> y;

    cout << "El GCD de " << x << " y " << y << " es: " << gcd(x,y);
    return 0;
}