#include<stdio.h>
main(){
       int testnum=1 ,i=0,b=0,farmernum, a, n, g;
       long int ans;
       while(scanf("%d", &testnum)!=EOF)
       while(i<testnum)
       {
           ans=0;b=0;
           scanf("%d",&farmernum);
           while(b<farmernum)
           {
               scanf("%d %d %d", &a, &n, &g);
               ans+=(a*g);
               b++;
           }
           printf("%ld\n", ans);
           i++;
       }

}

範例過了..就是不知道wa在那裡
覺得有點怪怪的..可是就是看不出來錯在那..=.="