Submission #1119481

#	Time	Username	Problem	Language	Result	Execution time	Memory
1119481		johu	Job Scheduling (CEOI12_jobs)	Java	60 / 100	1089 ms	54040 KiB

jobs

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

public class jobs {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());

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

        // Use a custom array for efficient memory usage
        Pair[] a = new Pair[m + 1];
        st = new StringTokenizer(br.readLine());
        for (int i = 1; i <= m; i++) {
            a[i] = new Pair(Integer.parseInt(st.nextToken()), i);
        }

        // Sort array using Arrays.sort with a custom comparator
        Arrays.sort(a, 1, m + 1);

        int l = 0, r = m;

        while (r - l > 1) {
            int mid = (l + r) / 2;
            int p = 1;

            for (int i = 1; i <= n; i++) {
                if (p > m || a[p].fr + d < i) {
                    break;
                }
                int cnt = 0;
                while (cnt < mid && p <= m && a[p].fr <= i) {
                    cnt++;
                    p++;
                }
            }

            if (p > m) {
                r = mid;
            } else {
                l = mid;
            }
        }

        System.out.println(r);
        int p = 1;

        // Use BufferedWriter for efficient output
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        for (int i = 1; i <= n; i++) {
            int cnt = 0;
            while (cnt < r && p <= m && a[p].fr <= i) {
                bw.write(a[p].sc + " ");
                cnt++;
                p++;
            }
            bw.write("0\n");
        }
        bw.flush();
    }

    static class Pair implements Comparable<Pair> {
        int fr, sc;

        Pair(int fr, int sc) {
            this.fr = fr;
            this.sc = sc;
        }

        @Override
        public int compareTo(Pair other) {
            return Integer.compare(this.fr, other.fr);
        }
    }
}

• Subtask 1: 60 / 100