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

public class Main {

	public static boolean[][] done;
	public static Integer[][] memo;

	public static void main(String[] args) throws IOException {

		proconScan proScan = new proconScan(" ");
		proScan.scan();
		Integer N = proScan.nextInteger();
		Integer M = proScan.nextInteger();
		Integer[][] costList = new Integer[N][N];
		Integer[] ar = new Integer[N];
		for (Integer integer = 0; integer < M; integer++) {
			proScan.scan();
			costList[proScan.nextInteger()][proScan.nextInteger()] = proScan.nextInteger();
		}
		for (Integer integer = 0; integer < N; integer++) {
			ar[integer] = integer;
		}
		Integer ans = 0, i, j, temp;
		do {
			for (i = 0, temp = 0; i < N; i++) {
				for (j = i + 1; j < N; j++) {
					try{
						temp += costList[ar[i]][ar[j]];
					}catch (Exception e) {
						// TODO: handle exception
					}
				}
			}
			ans = Math.max(ans, temp);
		} while (proconScan.nextPermutation(ar));

		System.out.print(ans);

		proScan.proconEnd();
	}
}

class proconScan {
	private BufferedReader br;
	private String inLine;
	private String[] inString;
	private Integer idx;
	private String splitChar;

	public proconScan() {
		br = new BufferedReader(new InputStreamReader(System.in));
		idx = 0;
		splitChar = " ";
	}

	public proconScan(String split) {
		br = new BufferedReader(new InputStreamReader(System.in));
		idx = 0;
		splitChar = split;
	}

	public void proconEnd() throws IOException {
		// TODO 自動生成されたメソッド・スタブ
		br.close();
	}

	public String scan() throws IOException {
		idx = 0;
		inLine = br.readLine();
		inString = inLine.split(splitChar, 0);
		return inLine;
	}

	public Integer scanInteger1() throws IOException {
		scan();
		return Integer.parseInt(inString[0]);
	}

	public String backLine() {
		return inLine;
	}

	public String nextString() {
		return inString[idx++];
	}

	public String[] getString() {
		return inString;
	}

	public Integer nextInteger() {
		Integer num;
		try {
			num = Integer.parseInt(inString[idx++]);
		} catch (NumberFormatException e) {
			num = null;// TODO: handle exception
		}
		return num;
	}

	public Integer[] getInteger() {
		Integer[] num = new Integer[this.getLen()];

		for (int i = 0; i < this.getLen(); i++) {
			num[i] = Integer.parseInt(inString[i]);
		}

		return num;
	}

	public Float nextFloat() {
		Float num;
		try {
			num = Float.parseFloat(inString[idx++]);
		} catch (NumberFormatException e) {
			num = null;// TODO: handle exception
		}
		return num;
	}

	public Float[] getFloat() {
		Float[] num = new Float[this.getLen()];

		for (int i = 0; i < this.getLen(); i++) {
			num[i] = Float.parseFloat(inString[i]);
		}

		return num;
	}

	public Integer getLen() {
		return inString.length;
	}

	public static boolean nextPermutation(Integer[] array) {
		Integer i = array.length - 1;
		while (i > 0 && array[i - 1] >= array[i])
			i--;
		if (i <= 0)
			return false;
		Integer j = array.length - 1;
		while (array[j] <= array[i - 1])
			j--;
		Integer temp = array[i - 1];
		array[i - 1] = array[j];
		array[j] = temp;
		j = array.length - 1;
		while (i < j) {
			temp = array[i];
			array[i] = array[j];
			array[j] = temp;
			i++;
			j--;
		}
		return true;
	}

}