Răspuns:
#include <bits/stdc++.h>
using namespace std;
int a, b, c, d;
int main()
{
//a)
cin>>a>>b>>c>>d;
cout<<a*2<<' '<<a*3<<endl;
cout<<b*2<<' '<<b*3<<endl;
cout<<c*2<<' '<<c*3<<endl;
cout<<d*2<<' '<<d*3<<endl;
//b)
cout<<a%3<<' '<<b%3<<' '<<c%3<<endl;
cout<<a+b+c<<endl;
cout<<a*b*c<<endl;
}
Explicație: