UVA 10030

#include<iostream>
using namespace std;
int main(void)
{
    int testCase;
    cin>>testCase;
    int lands[testCase];
    int sum = 0;
    int i,j;
    for(i=0;i<testCase;i++)
    {
        int rowFarmers;
        cin>>rowFarmers;
        sum=0;
        for(j=0;j<rowFarmers;j++)
        {
            int area,animal,envFriendly;
            cin>>area>>animal>>envFriendly;
            sum=sum+area*envFriendly;
        }
        lands[i]=sum;
    }
    for(i=0;i<testCase;i++)
    {
        cout<<lands[i]<<endl;
    }
    return 0;
}