Uva 10300 - Ecological Premium

#include<bits/stdc++.h>

using namespace std;

int main()

{

int n,ad[3],i,j;

cin >> n;

while(n--) {

int sum=0,k;

cin >> k;

while(k--) {

cin>>ad[0]>>ad[1]>>ad[2];

sum += ad[0]*ad[2];

}

cout << sum << endl;

}

return 0;

       }