java10810.java

import java.util.*;
public class java10810 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int m = in.nextInt();
        int[] arr = new int[n];

        for (int i = 0; i < n; i++) {
            arr[i] = 0;
        }

        for (int i = 0; i < m; i++) {
            int a = in.nextInt();
            int b = in.nextInt();
            int c = in.nextInt();
            for (int j = a-1; j <= b-1; j++) {
                arr[j] = c;
            }
        }

        for (int i = 0; i < n; i++) {
            System.out.println(arr[i]);
        }
    }
}