結果

問題 No.2992 Range ABCD String Query
ユーザー norioc
提出日時 2024-12-24 20:14:08
言語 PyPy3
(7.3.15)
結果
WA  
実行時間 -
コード長 4,524 bytes
コンパイル時間 241 ms
コンパイル使用メモリ 82,392 KB
実行使用メモリ 356,604 KB
最終ジャッジ日時 2024-12-24 20:17:01
合計ジャッジ時間 142,251 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge4
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ファイルパターン 結果
other WA * 40 TLE * 1
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 #
プレゼンテーションモードにする

import typing
import sys
input = sys.stdin.readline
def _ceil_pow2(n: int) -> int:
    x = 0
    while (1 << x) < n:
        x += 1
    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])
INF = 1 << 60
N, Q = map(int, input().split())
S = input().strip()
def identity(c):
    # dp = [[INF] * 4 for _ in range(4)]
    dp = [INF] * (4*4)
    k = ord(c) - ord('A')
    for i in range(4):
        for j in range(i, 4):
            if i <= k <= j:
                dp[i*4+j] = 0
            else:
                dp[i*4+j] = 1
    return dp
# 二つの区間をマージ
def op(a, b):
    # dp = [[INF] * 4 for _ in range(4)]
    dp = [INF] * (4*4)
    for i in range(4):
        for j in range(i, 4):
            for k in range(i, j+1):
                dp[i*4+j] = min(dp[i*4+j], a[i*4+k] + b[k*4+j])
    return dp
# e = [[0] * 4 for _ in range(4)]
e = [0] * (4*4)
segt = SegTree(op, e, [identity(c) for c in S])
for _ in range(Q):
    a = input().split()
    match a[0]:
        case '1':
            x = int(a[1]) - 1
            c = a[2]
            segt.set(x, identity(c))
        case '2':
            L, R = int(a[1])-1, int(a[2])
            res = segt.prod(L, R)
            ans = min(res)
            #print(ans)
        case _:
            assert False
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