#include <iostream>
#include <cmath>
#include <cstdlib>
#include <string>
#include <fstream>
using namespace std;

void drzewko(int &a, int &b, int &P)
{

    P = a*b*2;
}

int drzewko2(int &a, int &b, int &P)
{
    P = a*b*3;

    return P;
}

int main()
{
    cout<<"no hej podaj liczbe:  "<<endl;
    int a,b,P=0;
    cin>>a>>b;
    P = a*b;
    cout<<"twe pole to: "<<P<<endl;
    drzewko(a,b,P);
    cout<<"twe 2 * pole teraz to: "<<P<<endl;
    drzewko2(a,b,P);
    cout<<"twe 3 * pole teraz to: "<<P<<endl;
    return 0;
}