백준 10810 JAVA

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

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        StringTokenizer st;

        st = new StringTokenizer(br.readLine(), " ");

        int n = Integer.parseInt(st.nextToken());
        int m = Integer.parseInt(st.nextToken());

        int[] bucket = new int[n];

        for (int t = 0; t < m; t++) {
            st = new StringTokenizer(br.readLine(), " ");

            int i = Integer.parseInt(st.nextToken()) - 1;
            int j = Integer.parseInt(st.nextToken()) - 1;
            int k = Integer.parseInt(st.nextToken());

            for (int y = i; y <= j; y++) {
                bucket[y] = k;
            }
        }
        for (int number : bucket) {
            bw.write(number + " ");
        }
        bw.flush();
    }
}