結果

問題 No.961 Vibrant Fillumination
コンテスト
ユーザー lam6er
提出日時 2025-03-31 17:45:49
言語 PyPy3
(7.3.15)
結果
WA  
実行時間 -
コード長 2,524 bytes
コンパイル時間 324 ms
コンパイル使用メモリ 82,376 KB
実行使用メモリ 131,192 KB
最終ジャッジ日時 2025-03-31 17:47:03
合計ジャッジ時間 39,854 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 1 WA * 1
other AC * 4 WA * 44
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 sys

def main():
    input = sys.stdin.read
    data = input().split()
    ptr = 0

    N = int(data[ptr])
    ptr += 1

    h = list(map(int, data[ptr:ptr + N]))
    ptr += N

    events = []

    max_y = 0
    for _ in range(N):
        a = int(data[ptr])
        b = int(data[ptr + 1])
        c = int(data[ptr + 2])
        d = int(data[ptr + 3])
        e = int(data[ptr + 4])
        ptr +=5

        if d > max_y:
            max_y = d
        # add event: when the rectangle starts
        hash_val = h[e-1]
        events.append( (a, 2, b, d, hash_val) ) # type 2 is add
        # remove event: when the rectangle ends
        events.append( (c, 0, b, d, hash_val) ) # type 0 is remove

    Q = int(data[ptr])
    ptr +=1

    queries = []
    for q_idx in range(Q):
        p = int(data[ptr])
        q = int(data[ptr + 1])
        ptr +=2
        x_query = p + 0.5
        events.append( (x_query, 1, q, q_idx) ) # type 1 is query

    # sort events:
    events.sort(key=lambda x: (x[0], x[1]))

    class FenwickTree:
        def __init__(self, size):
            self.n = size
            self.tree = [0] * (self.n + 2)  # 1-based indexing

        def update(self, idx, value):
            while idx <= self.n:
                self.tree[idx] ^= value
                idx += idx & -idx

        def query(self, idx):
            res = 0
            while idx > 0:
                res ^= self.tree[idx]
                idx -= idx & -idx
            return res

    # The maximum possible y in Fenwick tree is max_y, which is d from rectangles, so up to 2N
    # Also, queries have q up to 2N-1, which when added 1 gives 2N.
    ft_size = 2 * N + 2  # to cover up to 2*N in b and d, which gives 2*N+1 in Fenwick index
    ft = FenwickTree(ft_size)
    ans = [0] * Q

    for event in events:
        x = event[0]
        type_code = event[1]

        if type_code == 2: # add
            b, d, h_val = event[2], event[3], event[4]
            pos_b = b + 1
            pos_d = d + 1
            ft.update(pos_b, h_val)
            ft.update(pos_d, h_val)
        elif type_code == 0: # remove
            b, d, h_val = event[2], event[3], event[4]
            pos_b = b + 1
            pos_d = d + 1
            ft.update(pos_b, h_val)
            ft.update(pos_d, h_val)
        elif type_code == 1: # query
            q, idx = event[2], event[3]
            pos = q + 1
            res = ft.query(pos)
            ans[idx] = res

    for a in ans:
        print(a)

if __name__ == "__main__":
    main()
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