Uva 10300 - Ecological Premium Solution

Problem Link
Uva 10300 - Ecological Premium Solution

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int t;
    while(cin>>t)
    {
        while(t--)
        {
            int n;
            cin>>n;
            long long result=0;
            while(n--)
            {
                long long a,b,c;
                cin>>a>>b>>c;
                result+=a*c;
            }
            cout<<result<<endl;
        }
    }
    return 0;
}