結果

問題 No.878 Range High-Element Query
ユーザー kusomushikusomushi
提出日時 2019-09-08 21:49:36
言語 Java21
(openjdk 21)
結果
AC  
実行時間 775 ms / 2,000 ms
コード長 7,360 bytes
コンパイル時間 3,016 ms
コンパイル使用メモリ 77,648 KB
実行使用メモリ 80,712 KB
最終ジャッジ日時 2023-09-09 22:46:05
合計ジャッジ時間 10,361 ms
ジャッジサーバーID
（参考情報） 		judge12 / judge13
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 45 ms
50,184 KB
testcase_01 AC 74 ms
51,788 KB
testcase_02 AC 90 ms
52,608 KB
testcase_03 AC 65 ms
52,232 KB
testcase_04 AC 84 ms
52,076 KB
testcase_05 AC 93 ms
51,984 KB
testcase_06 AC 61 ms
51,568 KB
testcase_07 AC 55 ms
49,820 KB
testcase_08 AC 92 ms
51,756 KB
testcase_09 AC 86 ms
50,984 KB
testcase_10 AC 69 ms
50,836 KB
testcase_11 AC 749 ms
74,696 KB
testcase_12 AC 633 ms
73,504 KB
testcase_13 AC 583 ms
65,968 KB
testcase_14 AC 533 ms
65,184 KB
testcase_15 AC 626 ms
73,344 KB
testcase_16 AC 767 ms
80,012 KB
testcase_17 AC 775 ms
80,712 KB
testcase_18 AC 760 ms
76,196 KB
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ソースコード

diff # 

import java.io.*;
import java.util.Arrays;
import java.util.StringJoiner;
import java.util.StringTokenizer;
import java.util.TreeSet;
import java.util.function.Function;
import java.util.function.LongPredicate;

public class Main {

    public static void main(String[] args) {
        FastScanner sc = new FastScanner(System.in);
        int N = sc.nextInt();
        int Q = sc.nextInt();
        int[] A = sc.nextIntArray(N, -1);

        int log = Integer.toBinaryString(N-1).length(); // 最大でN-1
        int[][] next = new int[log][N+1];
        for (int i = 0; i < log; i++) {
            next[i][N] = N;
        }
        int[] rev = new int[N];
        for (int i = 0; i < N; i++) {
            rev[A[i]] = i;
        }
        TreeSet<Integer> indice = new TreeSet<>();
        indice.add(N);
        for (int a = N-1; a >= 0; a--) {
            int i = rev[a];
            next[0][i] = indice.higher(i);
            indice.add(i);
        }

        for (int i = 1; i < log; i++) {
            for (int j = 0; j < N; j++) {
                // j -> next[i-1]
                next[i][j] = next[i-1][next[i-1][j]];
            }
        }

        PrintWriter pw = new PrintWriter(System.out);
        for (int q = 0; q < Q; q++) {
            int type = sc.nextInt(); // 使わない
            int l = sc.nextInt()-1;
            int r = sc.nextInt()-1;
            // [l, r]
            int time = 0;
            int curr = l;
            lo:
            while(curr < r) {
                for (int i = log-1; i >= 0; i--) {
                    int ne = next[i][curr];
                    if( ne <= r ) {
                        curr = ne;
                        time += 1 << i;
                        continue lo;
                    }
                }
                break;
            }
            pw.println(time+1);
        }
        pw.flush();
    }

    static class RangeGet {

        interface Monoid {
            long identity();
            long apply(long a, long b);
        }

        static Monoid MOD_SUM(int mod) {
            return new Monoid() {
                public long identity() { return 0; }
                public long apply(long a, long b) {
                    long c = a + b;
                    if( c >= mod ) {
                        c %= mod;
                    }
                    return c;
                }
            };
        }

        static Monoid SUM = new Monoid() {
            public long identity() { return 0; }
            public long apply(long a, long b) { return a + b; }
        };

        static Monoid MAX = new Monoid() {
            public long identity() { return Long.MIN_VALUE / 2; }
            public long apply(long a, long b) { return Math.max(a, b); }
        };

        static Monoid MIN = new Monoid() {
            public long identity() { return Long.MAX_VALUE / 2; }
            public long apply(long a, long b) { return Math.min(a, b); }
        };

        int size;
        long[] tree;
        Monoid m;
        long identity;

        RangeGet(int size, Monoid m) {
            this.size = 1;
            while( this.size < size ) this.size *= 2;
            this.tree = new long[this.size*2];
            this.m = m;
            this.identity = m.identity();
            if( this.identity != 0 ) {
                Arrays.fill(this.tree, this.identity);
            }
        }

        void update(int idx, long v) {
            idx += size;
            tree[idx] = v;

            while(idx > 0) {
                idx /= 2;
                tree[idx] = m.apply(tree[idx*2], tree[idx*2+1]);
            }
        }

        // [from, to)
        long query(int from, int to) {
            return _query(from, to, 1, 0, size);
        }

        long _query(int from, int to, int idx, int l, int r) {
            if (r <= from || to <= l) return identity;

            if (from <= l && r <= to) {
                return tree[idx];

            } else {
                int mid = (l+r)/2;
                long vl = _query(from, to, idx*2, l, mid);
                long vr = _query(from, to, idx*2+1, mid, r);
                return m.apply(vl, vr);
            }
        }

        long get(int idx) {
            return tree[idx+size];
        }
    }

    @SuppressWarnings("unused")
    static class FastScanner {
        private BufferedReader reader;
        private StringTokenizer tokenizer;

        FastScanner(InputStream in) {
            reader = new BufferedReader(new InputStreamReader(in));
            tokenizer = null;
        }

        String next() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        String nextLine() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    return reader.readLine();
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken("\n");
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        int[] nextIntArray(int n) {
            int[] a = new int[n];
            for (int i = 0; i < n; i++)
                a[i] = nextInt();
            return a;
        }

        int[] nextIntArray(int n, int delta) {
            int[] a = new int[n];
            for (int i = 0; i < n; i++)
                a[i] = nextInt() + delta;
            return a;
        }

        long[] nextLongArray(int n) {
            long[] a = new long[n];
            for (int i = 0; i < n; i++)
                a[i] = nextLong();
            return a;
        }
    }

    static <A> void writeLines(A[] as, Function<A, String> f) {
        PrintWriter pw = new PrintWriter(System.out);
        for (A a : as) {
            pw.println(f.apply(a));
        }
        pw.flush();
    }

    static void writeLines(int[] as) {
        PrintWriter pw = new PrintWriter(System.out);
        for (int a : as) pw.println(a);
        pw.flush();
    }

    static void writeLines(long[] as) {
        PrintWriter pw = new PrintWriter(System.out);
        for (long a : as) pw.println(a);
        pw.flush();
    }

    static int max(int... as) {
        int max = Integer.MIN_VALUE;
        for (int a : as) max = Math.max(a, max);
        return max;
    }

    static int min(int... as) {
        int min = Integer.MAX_VALUE;
        for (int a : as) min = Math.min(a, min);
        return min;
    }

    static void debug(Object... args) {
        StringJoiner j = new StringJoiner(" ");
        for (Object arg : args) {
            if (arg instanceof int[]) j.add(Arrays.toString((int[]) arg));
            else if (arg instanceof long[]) j.add(Arrays.toString((long[]) arg));
            else if (arg instanceof double[]) j.add(Arrays.toString((double[]) arg));
            else if (arg instanceof Object[]) j.add(Arrays.toString((Object[]) arg));
            else j.add(arg.toString());
        }
        System.err.println(j.toString());
    }
}
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