#include // {{{ // https://codeforces.com/blog/entry/96344 #pragma GCC optimize("O2,unroll-loops") #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt") using namespace std; template [[nodiscard]] static T MIN() { return std::numeric_limits::min(); } template [[nodiscard]] static T MAX() { return std::numeric_limits::max(); } template [[nodiscard]] static T sc(auto&& x) { return static_cast(x); } template [[nodiscard]] static T sz(auto&& x) { return static_cast(x.size()); } #define prln(...) std::println(__VA_ARGS__) #define pr(...) std::print(__VA_ARGS__) #ifdef LOCAL #define dbgln(...) std::println(__VA_ARGS__) #define dbg(...) std::print(__VA_ARGS__) #endif inline static void NO() { prln("NO"); } inline static void YES() { prln("YES"); } using ll = long long; using ld = long double; template using ve = std::vector; template using ar = std::array; template using pa = std::pair; template using tu = std::tuple; template using dq = std::deque; template using qu = std::queue; template using pq = std::priority_queue; template using st = std::stack; auto lb = [](auto... args) { return std::lower_bound(args...); }; auto ub = [](auto... args) { return std::upper_bound(args...); }; #define ff first #define ss second #define eb emplace_back #define pb push_back #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() // }}} template struct union_find { public: explicit union_find(size_t capacity) : par(capacity + 1, 0), rank(capacity + 1, 0) { std::iota(par.begin(), par.end(), 0); }; void join(T u, T v) noexcept { u = find(u), v = find(v); if (u == v) return; if (rank[u] < rank[v]) std::swap(u, v); if (rank[u] == rank[v]) ++rank[u]; par[v] = u; } [[nodiscard]] T find(T const& u) noexcept { if (u != par[u]) par[u] = find(par[u]); return par[u]; } std::vector par; std::vector rank; }; void solve() { int n, m; cin >> n >> m; ve heights(n + 1); for (int i = 1; i <= n; ++i) cin >> heights[i]; ve> roads(m); for (int i = 0; i < m; ++i) { int u, v; cin >> u >> v; if (heights[u] > heights[v]) { roads.pb({heights[u] - heights[v], u, v}); } else { roads.pb({heights[v] - heights[v], v, u}); } } sort(all(roads)); union_find uf(n); int q; cin >> q; ve> queries(q); for (int i = 0; i < q; ++i) { ll a, b, e; cin >> a >> b >> e; queries[i] = {heights[a] + e, a, b, e, i}; } sort(all(queries)); ve ans(n, false); for (auto& [hab, a, b, e, i] : queries) { while (i < m && roads[i][0] <= hab && roads[i][1] <= hab) { uf.join(a, roads[0][1]); uf.join(a, roads[0][2]); ++i; } ans[i] = uf.find(a) == uf.find(b); } for (auto e : ans) { e ? YES() : NO(); } } int main() { // {{{ cin.tie(nullptr)->sync_with_stdio(false); cin.exceptions(cin.failbit); int t = 1; cin >> t; while (t--) { solve(); } return 0; } // }}}