結果

問題 No.59 鉄道の旅
ユーザー ntudantuda
提出日時 2024-11-07 23:03:23
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 252 ms / 5,000 ms
コード長 3,952 bytes
コンパイル時間 169 ms
コンパイル使用メモリ 81,920 KB
実行使用メモリ 103,424 KB
最終ジャッジ日時 2024-11-07 23:03:27
合計ジャッジ時間 3,603 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge5
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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 100 ms
93,440 KB
testcase_01 AC 104 ms
93,696 KB
testcase_02 AC 99 ms
94,208 KB
testcase_03 AC 100 ms
94,464 KB
testcase_04 AC 252 ms
103,168 KB
testcase_05 AC 107 ms
97,280 KB
testcase_06 AC 114 ms
99,328 KB
testcase_07 AC 103 ms
94,720 KB
testcase_08 AC 186 ms
103,040 KB
testcase_09 AC 174 ms
103,424 KB
testcase_10 AC 171 ms
103,040 KB
testcase_11 AC 148 ms
102,656 KB
testcase_12 AC 202 ms
102,656 KB
testcase_13 AC 231 ms
103,296 KB
testcase_14 AC 245 ms
102,912 KB
testcase_15 AC 99 ms
93,568 KB
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 typing

def _ceil_pow2(n: int) -> int:
    x = 0
    while (1 << x) < n:
        x += 1
    return x

def _bsf(n: int) -> int:
    x = 0
    while n % 2 == 0:
        x += 1
        n //= 2
    return x

class SegTree:
    def __init__(self,
                 op: typing.Callable[[typing.Any, typing.Any], typing.Any],
                 e: typing.Any,
                 v: typing.Union[int, typing.List[typing.Any]]) -> None:
        self._op = op
        self._e = e

        if isinstance(v, int):
            v = [e] * v

        self._n = len(v)
        self._log = _ceil_pow2(self._n)
        self._size = 1 << self._log
        self._d = [e] * (2 * self._size)

        for i in range(self._n):
            self._d[self._size + i] = v[i]
        for i in range(self._size - 1, 0, -1):
            self._update(i)

    def set(self, p: int, x: typing.Any) -> None:
        assert 0 <= p < self._n

        p += self._size
        self._d[p] = x
        for i in range(1, self._log + 1):
            self._update(p >> i)

    def get(self, p: int) -> typing.Any:
        assert 0 <= p < self._n

        return self._d[p + self._size]

    def prod(self, left: int, right: int) -> typing.Any:
        assert 0 <= left <= right <= self._n
        sml = self._e
        smr = self._e
        left += self._size
        right += self._size

        while left < right:
            if left & 1:
                sml = self._op(sml, self._d[left])
                left += 1
            if right & 1:
                right -= 1
                smr = self._op(self._d[right], smr)
            left >>= 1
            right >>= 1

        return self._op(sml, smr)

    def all_prod(self) -> typing.Any:
        return self._d[1]

    def max_right(self, left: int,
                  f: typing.Callable[[typing.Any], bool]) -> int:
        assert 0 <= left <= self._n
        assert f(self._e)

        if left == self._n:
            return self._n

        left += self._size
        sm = self._e

        first = True
        while first or (left & -left) != left:
            first = False
            while left % 2 == 0:
                left >>= 1
            if not f(self._op(sm, self._d[left])):
                while left < self._size:
                    left *= 2
                    if f(self._op(sm, self._d[left])):
                        sm = self._op(sm, self._d[left])
                        left += 1
                return left - self._size
            sm = self._op(sm, self._d[left])
            left += 1

        return self._n

    def min_left(self, right: int,
                 f: typing.Callable[[typing.Any], bool]) -> int:
        assert 0 <= right <= self._n
        assert f(self._e)

        if right == 0:
            return 0

        right += self._size
        sm = self._e

        first = True
        while first or (right & -right) != right:
            first = False
            right -= 1
            while right > 1 and right % 2:
                right >>= 1
            if not f(self._op(self._d[right], sm)):
                while right < self._size:
                    right = 2 * right + 1
                    if f(self._op(self._d[right], sm)):
                        sm = self._op(self._d[right], sm)
                        right -= 1
                return right + 1 - self._size
            sm = self._op(self._d[right], sm)

        return 0

    def _update(self, k: int) -> None:
        self._d[k] = self._op(self._d[2 * k], self._d[2 * k + 1])


from bisect import *
N,K = map(int,input().split())
maxw = 10 ** 6 + 1
base = [0] * maxw
ST = SegTree(lambda x,y:x+y, 0, base)

X = []
cntx = 0
for _ in range(N):
    w = int(input())
    if w > 0:
        if ST.prod(w,maxw) < K:
            base[w] += 1
            ST.set(w,base[w])
            cntx += 1
    else:
        w = -w
        if base[w] > 0:
            base[w] -= 1
            ST.set(w,base[w])
            cntx -= 1
print(cntx)
0