#include <bits/stdc++.h>
#define mp make_pair
#define fi first
#define se second
#define pb push_back
#define bit(n) (1LL << (n))
#define getbit(x, i) (((x) >> (i)) & 1)
#define pii pair<int, int>
#define ALL(x) x.begin(), x.end()
using namespace std;
const int M = 5e5 + 5;
const int N = 2e5 + 5;
const int mod = 1e9 + 7;
const int oo = 1e9;
const long long ooo = 1e18;
const double pi = acos(-1);

template<typename T1, typename T2> bool mini(T1 &a, T2 b) {if(a > b) a = b; else return 0; return 1;}
template<typename T1, typename T2> bool maxi(T1 &a, T2 b) {if(a < b) a = b; else return 0; return 1;}

typedef long long ll;

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    #ifndef ONLINE_JUDGE
    freopen("file.inp", "r",stdin);
    #endif
    int n,m;
    cin >> n >> m;
    vector <vector <pair <int, int>>> adj(n);
    for (int i = 1; i <= m; i++) {
        int u, v, w;
        cin >> u >> v >> w;
        assert(v - u <= 1000);
        u--, v--;
        adj[u].push_back({v, w});
        adj[v].push_back({u, w});
        assert(w == 0 || w == 1);
    }

    
    int q; cin >> q;
    vector <vector <tuple <int, int, int>>> qr(n);
    for (int i = 0; i < q; i++) {
        int a, b, x;
        cin >> a >> b >> x;
        x--;
        qr[x].push_back({a, b, i});
    }

    const int mod = 1005;
    vector <vector <pair <int, int>>> points(n);
    vector <int> ans(q);
    points[0].push_back({0, 0});

    auto convex = [&](vector <pair <int, int>> &p) {
        sort(ALL(p));

        vector <pair <int, int>> res;
        int sz = 0;
        for (auto [x, y] : p) {
            while (sz >= 2) {
                int a = res[sz - 1].fi - res[sz - 2].fi;
                int b = res[sz - 1].se - res[sz - 2].se;
                int u = x - res[sz - 2].fi;
                int v = y - res[sz - 2].se;
                long long prod = (long long) a * v - (long long) b * u;
                if (prod <= 0) {
                    res.pop_back();
                    sz--;
                } else 
                    break;
            }
            res.push_back({x, y});
            sz++;
        }
        p = res;
    };

    for (int i = 0; i < n; i++) {
        int j = i;
        convex(points[j]);

        for (auto [a, b, ind] : qr[i]) {
            ans[ind] = 2 * oo;
            for (auto [x, y] : points[j]) 
                mini(ans[ind], x * a + y * b);
        }

        for (auto [k, w] : adj[i]) {
            int nxt = k;
            for (auto [x, y] : points[j]) {
                x += (w == 0);
                y += (w == 1);
                assert(w == 0 || w == 1);
                points[nxt].push_back({x, y});
            }
        }
        points[j].clear();
    }

    for (int i = 0; i < q; i++)
        cout << ans[i] << "\n";
    return 0;
}