Submission #1138392

#	Time	Username	Problem	Language	Result	Execution time	Memory
1138392		mrsmartypants	Job Scheduling (CEOI12_jobs)	Java	0 / 100	56 ms	11372 KiB

jobs

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

class Main {

    static ArrayList<ArrayList<Integer>> schedule = new ArrayList<>();
    static int N, D, M;

    public static void main(String... args) throws IOException {

//        BufferedReader reader = new BufferedReader(new FileReader("input.in"));
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        PrintWriter writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));

        StringTokenizer st = new StringTokenizer(reader.readLine());
        N = Integer.parseInt(st.nextToken());
        D = Integer.parseInt(st.nextToken());
        M = Integer.parseInt(st.nextToken());

        st = new StringTokenizer(reader.readLine());
        Request[] jobs = new Request[M];
        for (int i = 0; i < M; i++) {
            jobs[i] = new Request(i + 1, Integer.parseInt(st.nextToken()));
        }

        Arrays.sort(jobs, Comparator.comparingInt(j -> j.day));

        int lo = 1;
        int hi = M + 1;


        while (lo < hi) {
            int mid = lo + (hi - lo) / 2;

            Return r = test(mid, jobs);

            if (r.worked) {
                hi = mid;
                schedule = r.schedule;
            } else {
                lo = mid + 1;
            }
        }

        writer.println(lo);
        for (int i = 0; i < N; i++) {
            for (int idx : schedule.get(i)) writer.print(idx + " ");
            writer.println(0);
        }

        writer.close();

    }

    static Return test(int numMachines, Request[] jobs) {
        ArrayList<ArrayList<Integer>> schedule = new ArrayList<>();
        
        for (int i = 0; i < N ;i++)schedule.add(new ArrayList<>());
        int reqNum = 0;

        for (int day = 1; day <= N; day++) {
            
            for (int j = 0; j < numMachines; j++) {


                if (jobs[reqNum].day > day) break;


                if (jobs[reqNum].day + D >= day) {
                    schedule.get(day - 1).add(jobs[reqNum++].id);
                } else {
                    return new Return(false, schedule);
                }

                if (reqNum == M) return new Return(true, schedule);
            }
        }

        return new Return(false, schedule);
    }

    static class Return {
        boolean worked;
        ArrayList<ArrayList<Integer>> schedule;

        public Return(boolean worked, ArrayList<ArrayList<Integer>> schedule) {
            this.worked = worked;
            this.schedule = schedule;
        }
    }

    static class Request {
        int id;
        int day;

        public Request(int id, int day) {
            this.id = id;
            this.day = day;
        }
    }
}

• Subtask 1: 0 / 100