[UVa]10300-Ecological Premium

#include<iostream>
using namespace std;

int main(int argc, char** argv)
{
    int m;
    cin >> m;
    int n;
    while(cin >> n)
    {
        if(n == 0)
            break;
        int size, num, ef;
        int sum = 0;
        for(int i = 0; i < n; i++)
        {
            cin >> size >> num >> ef;
            sum += size * ef;
        }
        cout << sum << endl;
    }
    return 0;
}