Baekjoon #2637

import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) {
        FastReader rd = new FastReader();
        int N = rd.nextInt();
        int M = rd.nextInt();
        int[] outDegree = new int[N + 1]; // 진출차수
        int[] inDegree = new int[N + 1]; // 진입차수
        List<int[]> list[] = new ArrayList[N + 1];
        for (int i = 1; i <= N; i++) {
            list[i] = new ArrayList<>();
        }

        for (int i = 0; i < M; i++) {
            int n1 = rd.nextInt();
            int n2 = rd.nextInt();
            int cnt = rd.nextInt();

            list[n1].add(new int[]{n2, cnt}); // 방향 그래프
            outDegree[n1]++;
            inDegree[n2]++;
        }

        Queue<Integer> q = new LinkedList<>();

        int[] dp = new int[N + 1];
        q.add(N);
        dp[N] = 1;
        while (!q.isEmpty()) {
            int curr = q.poll();

            for (int[] next : list[curr]) {
                dp[next[0]] += dp[curr] * next[1];
                inDegree[next[0]]--;
                if (inDegree[next[0]] == 0) {
                    q.add(next[0]);
                }
            }
        }
        StringBuilder sb = new StringBuilder();
        for (int i = 1; i <= N; i++) {
            if (outDegree[i] == 0) {
                sb.append(i).append(" ").append(dp[i]).append("\n");
            }
        }
        System.out.print(sb.toString());
    }


    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
}