답안 #1119518

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1119518 2024-11-27T05:58:05 Z johu Job Scheduling (CEOI12_jobs) Java 11
79 / 100
999 ms 30620 KB
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());

        if (m <= 300000) {
            // Use the ArrayList-based implementation for smaller cases
            handleSmallCases(br, n, d, m);
        } else {
            // Use the provided code for larger cases without any modifications
            handleLargeCases(n, d, m);
        }
    }

    private static void handleSmallCases(BufferedReader br, int n, int d, int m) throws IOException {
        List<Pair> a = new ArrayList<>(m + 2);
        StringTokenizer st = new StringTokenizer(br.readLine());
        for (int i = 1; i <= m; i++) {
            a.add(new Pair(Integer.parseInt(st.nextToken()), i));
        }
        a.add(new Pair(1000000000, 0)); // Dummy pair for boundary

        // Sort using built-in sort with natural order
        a.sort(Comparator.naturalOrder());

        int l = 0, r = m;

        while (r - l > 1) {
            int mid = (l + r) / 2;
            int p = 0;

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

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

        System.out.println(r);
        StringBuilder sb = new StringBuilder();
        int p = 0;

        for (int i = 1; i <= n; i++) {
            int cnt = 0;
            while (cnt < r && p < m && a.get(p).fr <= i) {
                sb.append(a.get(p).sc).append(" ");
                cnt++;
                p++;
            }
            sb.append("0\n");
        }

        System.out.print(sb);
    }

    private static void handleLargeCases(int n, int d, int m) throws IOException {
        // Directly using the provided code for large cases
        FastInputReader reader = new FastInputReader(System.in);

        int[] fr = new int[m + 1];
        int[] sc = new int[m + 1];
        for (int i = 1; i <= m; i++) {
            fr[i] = reader.nextInt();
            sc[i] = i;
        }

        quickSort(fr, sc, 1, m);

        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 || fr[p] + d < i) break;
                int cnt = 0;
                while (cnt < mid && p <= m && fr[p] <= i) {
                    cnt++;
                    p++;
                }
            }

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

        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        bw.write(r + "\n");

        int p = 1;
        for (int i = 1; i <= n; i++) {
            int cnt = 0;
            while (cnt < r && p <= m && fr[p] <= i) {
                bw.write(sc[p] + " ");
                cnt++;
                p++;
            }
            bw.write("0\n");
        }
        bw.flush();
    }

    private static void quickSort(int[] fr, int[] sc, int low, int high) {
        if (low < high) {
            int pivotIndex = partition(fr, sc, low, high);
            quickSort(fr, sc, low, pivotIndex - 1);
            quickSort(fr, sc, pivotIndex + 1, high);
        }
    }

    private static int partition(int[] fr, int[] sc, int low, int high) {
        int pivot = fr[high];
        int i = low - 1;
        for (int j = low; j < high; j++) {
            if (fr[j] <= pivot) {
                i++;
                swap(fr, sc, i, j);
            }
        }
        swap(fr, sc, i + 1, high);
        return i + 1;
    }

    private static void swap(int[] fr, int[] sc, int i, int j) {
        int tempFr = fr[i];
        fr[i] = fr[j];
        fr[j] = tempFr;

        int tempSc = sc[i];
        sc[i] = sc[j];
        sc[j] = tempSc;
    }

    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);
        }
    }

    static class FastInputReader {
        private final DataInputStream din;
        private final byte[] buffer;
        private int bufferPointer, bytesRead;

        public FastInputReader(InputStream in) {
            din = new DataInputStream(in);
            buffer = new byte[1 << 16]; // 64 KB buffer
            bufferPointer = bytesRead = 0;
        }

        private byte read() throws IOException {
            if (bufferPointer == bytesRead) {
                bytesRead = din.read(buffer, 0, buffer.length);
                bufferPointer = 0;
                if (bytesRead == -1) return -1; // End of stream
            }
            return buffer[bufferPointer++];
        }

        public int nextInt() throws IOException {
            int ret = 0;
            byte c = read();
            while (c <= ' ') c = read(); // Skip whitespace
            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;
        }
    }
}
# 결과 실행 시간 메모리 Grader output
1 Correct 346 ms 19492 KB Output is correct
2 Correct 315 ms 18964 KB Output is correct
3 Correct 323 ms 19128 KB Output is correct
4 Correct 341 ms 19044 KB Output is correct
5 Correct 327 ms 19036 KB Output is correct
6 Correct 337 ms 18912 KB Output is correct
7 Correct 345 ms 18804 KB Output is correct
8 Correct 337 ms 19324 KB Output is correct
9 Correct 605 ms 19388 KB Output is correct
10 Correct 467 ms 19332 KB Output is correct
11 Correct 524 ms 21104 KB Output is correct
12 Correct 459 ms 25368 KB Output is correct
13 Correct 623 ms 30620 KB Output is correct
14 Partially correct 343 ms 20488 KB Partially correct
15 Partially correct 737 ms 21868 KB Partially correct
16 Partially correct 411 ms 23632 KB Partially correct
17 Partially correct 449 ms 26288 KB Partially correct
18 Partially correct 952 ms 27544 KB Partially correct
19 Partially correct 999 ms 29300 KB Partially correct
20 Partially correct 443 ms 26392 KB Partially correct