#line 2 "/home/cocojapanpan/Procon_CPP/proconLibrary/lib/template/procon.hpp"

#ifndef DEBUG
// 提出時にassertはオフ
#ifndef NDEBUG
#define NDEBUG
#endif
// 定数倍高速化
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#endif

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#define ALL(x) (x).begin(), (x).end()
template <class T>
using vec = vector<T>;
template <class T, class S>
inline bool chmax(T &a, const S &b) {
    return (a < b ? a = b, 1 : 0);
}
template <class T, class S>
inline bool chmin(T &a, const S &b) {
    return (a > b ? a = b, 1 : 0);
}
template <class T>
constexpr T INF = 1'000'000'000;
template <>
constexpr int INF<int> = 1'000'000'000;
template <>
constexpr ll INF<ll> = ll(INF<int>) * INF<int> * 2;
#line 2 "main.cpp"


ll solve() {
    ll A, B, C;
    cin >> A >> B >> C;
    ll X, Y, Z, W;
    cin >> X >> Y >> Z >> W;
    ll ans = 0;
    auto isValid = [&](ll x, ll y, ll z, ll w) {
        return 0 <= x && 0 <= y && 0 <= z && 0 <= w;
    };
    auto calcEarn = [&](ll x, ll y, ll z, ll w) {
        if(!isValid(x, y, z, w)) return -1LL;
        return x * X + y * Y + z * Z + w * W;
    };
    auto calc_x0 = [&](ll a, ll b, ll c) {
        ll x = 0;
        ll y = -a + c;
        ll z = -b + c;
        ll w = a + b - c;
        chmax(ans, calcEarn(x, y, z, w));
    };
    auto calc_y0 = [&](ll a, ll b, ll c) {
        ll x = a - c;
        ll y = 0;
        ll z = a - b;
        ll w = -a + b + c;
        chmax(ans, calcEarn(x, y, z, w));
    };
    auto calc_z0 = [&](ll a, ll b, ll c) {
        ll x = b - c;
        ll y = b - a;
        ll z = 0;
        ll w = a - b + c;
        chmax(ans, calcEarn(x, y, z, w));
    };
    auto calc_w0 = [&](ll a, ll b, ll c) {
        if((a + b + c) % 2) return;
        ll x = (a + b - c) / 2;
        ll y = (-a + b + c) / 2;
        ll z = (a - b + c) / 2;
        ll w = 0;
        chmax(ans, calcEarn(x, y, z, w));
    };
    auto calc_w1 = [&](ll a, ll b, ll c) {
        if((a + b + c - 1) % 2) return;
        ll x = (a + b - c - 1) / 2;
        ll y = (-a + b + c - 1) / 2;
        ll z = (a - b + c - 1) / 2;
        ll w = 1;
        chmax(ans, calcEarn(x, y, z, w));
    };
    vec<function<void(ll, ll, ll)>> funList = {
        calc_x0, calc_y0, calc_z0, calc_w0, calc_w1
    };
    for(ll a = 0; a <= A; a++) {
        for(auto fun : funList) {
            fun(a, B, C);
        }
    }
    for(ll b = 0; b <= B; b++) {
        for(auto fun : funList) {
            fun(A, b, C);
        }
    }
    for(ll c = 0; c <= C; c++) {
        for(auto fun : funList) {
            fun(A, B, c);
        }
    }
    return ans;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int T;
    cin >> T;
    while(T--) {
        cout << solve() << "\n";
    }
}