easy problem

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int ts;
    cout<<"test cases: "<<endl;
    cin>>ts;
    for(int p = 1; p <= ts; p++){
        cout<<"time: "<<endl;
        double t, velocity;
        cin>>t;
        cout<<"Average velocity: "<<endl;
        cin>>velocity;
        double ans  = (t*velocity)/(12.00*1.0);
        printf("Litres needed %0.3lf\n", ans);
    }
    return 0;
}