結果

問題 No.875 Range Mindex Query
ユーザー kusomushikusomushi
提出日時 2019-09-08 02:58:29
言語 Java21
(openjdk 21)
結果
AC  
実行時間 589 ms / 2,000 ms
コード長 5,830 bytes
コンパイル時間 2,550 ms
コンパイル使用メモリ 82,060 KB
実行使用メモリ 50,012 KB
最終ジャッジ日時 2024-06-27 14:50:36
合計ジャッジ時間 10,212 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge3
このコードへのチャレンジ
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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 58 ms
37,108 KB
testcase_01 AC 88 ms
38,912 KB
testcase_02 AC 105 ms
39,024 KB
testcase_03 AC 71 ms
38,416 KB
testcase_04 AC 91 ms
38,284 KB
testcase_05 AC 86 ms
38,520 KB
testcase_06 AC 92 ms
39,436 KB
testcase_07 AC 95 ms
39,540 KB
testcase_08 AC 91 ms
38,560 KB
testcase_09 AC 81 ms
38,280 KB
testcase_10 AC 98 ms
39,056 KB
testcase_11 AC 530 ms
49,760 KB
testcase_12 AC 500 ms
49,388 KB
testcase_13 AC 473 ms
49,796 KB
testcase_14 AC 465 ms
49,520 KB
testcase_15 AC 549 ms
49,764 KB
testcase_16 AC 584 ms
49,876 KB
testcase_17 AC 581 ms
50,012 KB
testcase_18 AC 589 ms
49,500 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.function.Function;
import java.util.function.IntBinaryOperator;

public class Main {

    static int N, Q;
    static int[] A;

    public static void main(String[] args) {
        FastScanner sc = new FastScanner(System.in);
        N = sc.nextInt();
        Q = sc.nextInt();
        A = sc.nextIntArray(N);
        PrintWriter pw = new PrintWriter(System.out);
        RangeMaxIndex seg = new RangeMaxIndex(N, (ai, bi) -> {
            if( ai >= N && bi >= N ) return ai;
            if( ai >= N ) return bi;
            if( bi >= N ) return ai;

            int av = A[ai];
            int bv = A[bi];
            if( av < bv ) {
                return ai;
            } else {
                return bi;
            }
        });
        for (int i = 0; i < Q; i++) {
            int t = sc.nextInt();
            int l = sc.nextInt()-1;
            int r = sc.nextInt()-1;

            if( t == 1 ) {
                int temp = A[l];
                A[l] = A[r];
                A[r] = temp;
                seg.update(l);
                seg.update(r);

            } else {
                pw.println( seg.query(l, r+1)+1 );
            }
        }
        pw.flush();
    }

    static class RangeMaxIndex {

        int size;
        int[] indice;
        IntBinaryOperator compare;

        RangeMaxIndex(int size, IntBinaryOperator compare) {
            this.size = 1;
            while( this.size < size ) this.size *= 2;
            this.indice = new int[this.size*2];
            this.compare = compare;

            init();
        }

        void init() {
            for (int i = 0; i < size; i++) {
                indice[i+size] = i;
            }
            for (int i = size-1; i >= 1; i--) {
                indice[i] = compare.applyAsInt(indice[i*2], indice[i*2+1]);
            }
        }

        void update(int idx) {
            idx += size;

            while(idx > 0) {
                idx /= 2;
                indice[idx] = compare.applyAsInt(indice[idx*2], indice[idx*2+1]);
            }
        }

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

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

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

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

    @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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