#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "item.h"



double total_value(struct item items[], int n) {
    // TODO: implement this function
    return 0;
}


int main(void) {
    int n;
    if (scanf("%d", &n) != 1) { n = 0; }
    struct item items[500];
    for (int i = 0; i < n; i++) {
        scanf("%49s %d %lf", items[i].name, &items[i].quantity, &items[i].unit_price);
    }
    printf("%g\n", total_value(items, n));
    return 0;
}