#include <bits/stdc++.h>   using namespace std;   int main() {     int t;     scanf( %d , &t);     while (t--) {       int b, f, p, h, c, money = 0;       scanf( %d %d %d %d %d , &b, &p, &f, &h, &c);       b /= 2;       if (h > c) {         money = min(b, p) * h;         b -= min(b, p);         money += min(b, f) * c;       } else {         money = min(b, f) * c;         b -= min(b, f);         money += min(b, p) * h;       }       printf( %d n , money);     }   }   