Submission #675336

#	Time	Username	Problem	Language	Result	Execution time	Memory
675336		wisePigOnTheMoon	Job Scheduling (CEOI12_jobs)	Java	60 / 100	591 ms	65536 KiB

jobs

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

public class jobs {
    public static void main(String[] args) throws Exception {
        Reader in = new Reader();
        int days = in.nextInt();
        int d = in.nextInt();
        int m = in.nextInt();
        int[] jobs = new int[days];
        ArrayList<ArrayList<Integer>> ids = new ArrayList<>();
        for (int i = 0; i < days; i++) {
            ids.add(new ArrayList<Integer>());
        }
        for (int i = 0; i < m; i++) {
            int assign = in.nextInt();
            jobs[assign - 1]++;
            ids.get(assign - 1).add(i + 1);

        }
        int l = 0;
        int r = m;
        while (l < r) {
            int mid = (l + r)/2;
            if (checkValid(mid, days, d, jobs)) {
                r = mid;
            } else {
                l = mid + 1;
            }
        }
        System.out.println(l);
        printer(l, days, jobs, ids);
    }

    public static boolean checkValid(int numMachines, int days, int d,  int[] jobs) {
        int start = 0, current = 0, toDo = jobs[start], machines = numMachines;
        while (current < days && (current - start) <= d) {
            if (toDo > machines) {
                toDo -= machines;
                current++;
                machines = numMachines;
            } else {
                machines -= toDo;
                if (machines == 0) {
                    current++;
                    machines = numMachines;
                }
                start++;
                toDo = start < days ? jobs[start] : 0;
            }
            if (start > current) {
                current = start;
                machines = numMachines;
            }
        }
        if (current - start > d) {
            return false;
        }
        if (toDo > 0 || start < days) return false;
        return true;
    }

    public static void printer(int numMachines, int days, int[] jobs, ArrayList<ArrayList<Integer>> ids) {
        StringBuilder sb = new StringBuilder();
        int start = 0, current = 0, toDo = jobs[start], machines = numMachines, jobStart = 0;
        while (current < days) {
            if (toDo > machines) {
                for (int i = 0; i < machines; i++) {
                    sb.append(ids.get(start).get(jobStart++));
                    sb.append(" ");
                }
                toDo -= machines;
                current++;
                sb.append("0\n");
                machines = numMachines;
            } else {
                machines -= toDo;
                for (int i = 0; i < toDo; i++) {
                    sb.append(ids.get(start).get(jobStart++));
                    sb.append(" ");
                }
                if (machines == 0) {
                    current++;
                    machines = numMachines;
                    sb.append("0\n");
                }
                start++;
                jobStart = 0;
                toDo = start < days ? jobs[start] : 0;
            }
            if (start > current) {
                current = start;
                machines = numMachines;
                sb.append("0\n");
            }
        }
        System.out.println(sb.toString());
    }
    
    static class Reader //FastReader//
    {
        final private int BUFFER_SIZE = 1 << 16;
        private DataInputStream din;
        private byte[] buffer;
        private int bufferPointer, bytesRead;

        public Reader()
        {
            din = new DataInputStream(System.in);
            buffer = new byte[BUFFER_SIZE];
            bufferPointer = bytesRead = 0;
        }
        private void fillBuffer() throws IOException
        {
            bytesRead = din.read(buffer, bufferPointer = 0, BUFFER_SIZE);
            if (bytesRead == -1)
                buffer[0] = -1;
        }

        private byte read() throws IOException
        {
            if (bufferPointer == bytesRead)
                fillBuffer();
            return buffer[bufferPointer++];
        }

        public void close() throws IOException
        {
            if (din == null)
                return;
            din.close();
        }
        public int nextInt() throws IOException
        {
            int ret = 0;
            byte c = read();
            while (c <= ' ')
                c = read();
            boolean neg = (c == '-');
            if (neg)
                c = read();
            do
            {
                ret = ret * 10 + c - '0';
            }  while ((c = read()) >= '0' && c <= '9');

            if (neg)
                return -ret;
            return ret;
        }
    }
}

• Subtask 1: 60 / 100