#include <bits/stdc++.h>

using namespace std;

int main() {
    int T;
    cin >> T;

    while (T--) {
        int N, M;
        cin >> N >> M;

        vector<int> L(N);
        for (int i = 0; i < N; ++i) {
            cin >> L[i];
        }

        vector<int> F(M), B(M), W(M);
        for (int i = 0; i < M; ++i) {
            cin >> F[i] >> B[i] >> W[i];
        }

        long long max_magic = 0;
        for (int i = 0; i < M; ++i) {
            long long sun_magic = 0, shade_magic = 0;
            for (int j = 0; j < N; ++j) {
                if (F[i] <= L[j]) {
                    sun_magic += B[i];
                } else {
                    shade_magic += W[i];
                }
            }
            max_magic = max(max_magic, sun_magic - shade_magic);
        }

        cout << max_magic << endl;
    }

    return 0;
}