import kotlin.math.max

fun main() {
    val builder = StringBuilder()

    val (n, m) = readInputLine().split(" ").map { it.toInt() }

    val scores = Array(m) {
        val (i1, i2, s) = readInputLine().split(" ").map { it.toInt() }
        Triple(i1, i2, s)
    }

    val arr = IntArray(n) { it }

    var maxScore = 0

    do {
        var tmp = 0

        for (s in scores) {
            if (arr[s.first] < arr[s.second]) {
                tmp += s.third
            }
        }

        maxScore = max(maxScore, tmp)
    } while (nextPermutation(arr))

    builder.appendln(maxScore)

    print(builder.toString())
}

fun readInputLine(): String {
    return readLine()!!
}

fun nextPermutation(arr: IntArray): Boolean {
    var i = arr.size - 1
    while (i > 0 && arr[i - 1] >= arr[i]) {
        i--
    }

    if (i <= 0) {
        return false
    }

    var j = arr.size - 1
    while (arr[j] <= arr[i - 1]) {
        j--
    }

    var temp = arr[i - 1];
    arr[i - 1] = arr[j];
    arr[j] = temp;

    j = arr.size - 1;
    while (i < j) {
        temp = arr[i];
        arr[i] = arr[j];
        arr[j] = temp;
        i++;
        j--;
    }

    return true;
}