import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;

public class Main {
	static int N, M;
	static int[] item1, item2, score;
	static int[][] mx;
	static long ans = 0;

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		N = sc.nextInt();
		M = sc.nextInt();
		item1 = new int[M];
		item2 = new int[M];
		score = new int[M];
		mx = new int[N][N];
		for (int i = 0; i < M; ++i) {
			item1[i] = sc.nextInt();
			item2[i] = sc.nextInt();
			score[i] = sc.nextInt();
			mx[item1[i]][item2[i]] = score[i];
		}
		int[] ord = new int[N];
		for (int i = 0; i < N; ++i)
			ord[i] = i;
		do {
			long sum = 0;
			for (int i = 0; i < N; ++i) {
				for (int j = i + 1; j < N; ++j) {
					sum += mx[ord[i]][ord[j]];
				}
			}
			ans = Math.max(ans, sum);
		} while (nextPermutation(ord));
		System.out.println(ans);
	}

	static boolean nextPermutation(int[] ord) {
		int i = ord.length - 1;
		while (i - 1 >= 0 && ord[i - 1] > ord[i])
			--i;
		if (i == 0)
			return false;
		int j = i;
		while (j + 1 < ord.length && ord[j + 1] > ord[i - 1])
			++j;
		int d = ord[i - 1];
		ord[i - 1] = ord[j];
		ord[j] = d;
		int s = i;
		int t = ord.length - 1;
		while (s < t) {
			d = ord[s];
			ord[s] = ord[t];
			ord[t] = d;
			++s;
			--t;
		}
		return true;
	}

	static void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}

}