import java.util.Random;
import java.util.Scanner;

public class Main {
    private static double sigmoid(double x) {
        return 1 / (1 + Math.exp(-x));
    }

    public static void main(String[] argv) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int m = scanner.nextInt();
        int[][] p = new int[n][n];
        for (int i = 0; i < m; i++) {
            int mae = scanner.nextInt();
            int ato = scanner.nextInt();
            p[ato][mae] = scanner.nextInt();
        }
        int[] ans = new int[n];
        for (int i = 0; i < n; i++) ans[i] = i;

        Random r = new Random();
        int count = 0;
        double T = 10000;
        while (T > 0.0001 && (count++) < 100000) {
            int a = r.nextInt(n);
            int b = r.nextInt(n);
            if (a == b) continue;
            if (a > b) {
                int t = b;
                b = a;
                a = t;
            }
            int diff = p[ans[a]][ans[b]] - p[ans[b]][ans[a]];
            for (int i = a + 1; i <= b - 1; i++) {
                diff -= p[ans[b]][ans[i]];
                diff += p[ans[a]][ans[i]];
            }
            double prob = 0.9;
            if (diff <= 0.0) {
                prob = 0.5 * Math.exp(diff / T);
            }
//            System.out.println("diff=" + diff + ", prob=" + prob);
            if (r.nextDouble() < prob) {
//                System.out.println("change " + a + ", " + b);
                int tt = ans[b];
                ans[b] = ans[a];
                ans[a] = tt;
            }
            T *= 0.99;
        }
        int score = 0;
        for (int i = 0; i < n; i++) {
            for (int j = i + 1; j < n; j++) {
                score += p[ans[j]][ans[i]];
            }
        }
        System.out.println(score);
        for (int i = 0; i < n; i++) {
            System.out.print(ans[i] + " ");
        }
    }
}