UVaOJ 10300 - Ecological Premium

#include <stdio.h>int main(){int len = 0;scanf("%d", &len);while (len--){int f = 0;scanf("%d", &f);int sum = 0;while (f--){int s, n, d;scanf("%d%d%d", &s, &n, &d);sum += (double)s * d;}printf("%d\n", sum);}return 0;}