結果

問題 No.878 Range High-Element Query
コンテスト
ユーザー sgsw
提出日時 2021-08-12 23:56:11
言語 PyPy3
(7.3.15)
結果
WA  
実行時間 -
コード長 3,126 bytes
コンパイル時間 148 ms
コンパイル使用メモリ 82,076 KB
実行使用メモリ 99,792 KB
最終ジャッジ日時 2024-10-02 06:40:13
合計ジャッジ時間 3,891 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
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ファイルパターン 結果
sample AC * 1
other WA * 18
権限があれば一括ダウンロードができます

ソースコード

diff # 

import types

_atcoder_code = """
# Python port of AtCoder Library.
__all__ = ["string","lazysegtree","convolution","maxflow","modint"
    ,"mincostflow","segtree","_scc","_math","math","dsu","twosat","fenwicktree","scc","_bit","lca","unverified","graph","matrix","algebra","combinatorics"]
__version__ = '0.0.1'
"""

atcoder = types.ModuleType('atcoder')
exec(_atcoder_code, atcoder.__dict__)

_atcoder_dsu_code = """
import typing


class DSU:
    '''
    Implement (union by size) + (path halving)

    Reference:
    Zvi Galil and Giuseppe F. Italiano,
    Data structures and algorithms for disjoint set union problems
    '''

    def __init__(self, n: int = 0) -> None:
        self._n = n
        self.parent_or_size = [-1] * n

    def merge(self, a: int, b: int) -> int:
        assert 0 <= a < self._n
        assert 0 <= b < self._n

        x = self.leader(a)
        y = self.leader(b)

        if x == y:
            return x

        if -self.parent_or_size[x] < -self.parent_or_size[y]:
            x, y = y, x

        self.parent_or_size[x] += self.parent_or_size[y]
        self.parent_or_size[y] = x

        return x

    def same(self, a: int, b: int) -> bool:
        assert 0 <= a < self._n
        assert 0 <= b < self._n

        return self.leader(a) == self.leader(b)

    def leader(self, a: int) -> int:
        assert 0 <= a < self._n

        parent = self.parent_or_size[a]
        while parent >= 0:
            if self.parent_or_size[parent] < 0:
                return parent
            self.parent_or_size[a], a, parent = (
                self.parent_or_size[parent],
                self.parent_or_size[parent],
                self.parent_or_size[self.parent_or_size[parent]]
            )

        return a

    def size(self, a: int) -> int:
        assert 0 <= a < self._n

        return -self.parent_or_size[self.leader(a)]

    def groups(self) -> typing.List[typing.List[int]]:
        leader_buf = [self.leader(i) for i in range(self._n)]

        result: typing.List[typing.List[int]] = [[] for _ in range(self._n)]
        for i in range(self._n):
            result[leader_buf[i]].append(i)

        return list(filter(lambda r: r, result))
"""

atcoder.dsu = types.ModuleType('atcoder.dsu')
exec(_atcoder_dsu_code, atcoder.dsu.__dict__)
DSU = atcoder.dsu.DSU


# from atcoder.dsu import DSU
import sys


def input():
    return sys.stdin.readline().rstrip()


DXY = [(0, -1), (1, 0), (0, 1), (-1, 0)]  # LDRU
mod = 998244353
inf = 1 << 64


def main():
    #doubling
    n, q = map(int, input().split())
    dsu = DSU(n)
    a = list(map(int, input().split()))
    for i in range(n):
        if i + 1 < n and a[i] < a[i + 1]:
            dsu.merge(i, i + 1)
    right_most = [-inf]*(n)
    for group in dsu.groups():
        group.sort()
        for elem in group:
            right_most[elem] = group[-1]
    
    for i in range(q):
        _,l,r = map(int,input().split())
        l -= 1
        r -= 1
        if right_most[l] <= r:
            print(right_most[l] - l + 1)
        else:
            print(r - l + 1)
    return 0


if __name__ == "__main__":
    main()
0