結果
| 問題 | No.1961 Clear Brackets |
| ユーザー |
 maspy
|
| 提出日時 | 2023-11-21 03:57:51 |
| 言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
AC
|
| 実行時間 | 1,017 ms / 2,000 ms |
| コード長 | 23,460 bytes |
| コンパイル時間 | 6,391 ms |
| コンパイル使用メモリ | 338,560 KB |
| 実行使用メモリ | 113,148 KB |
| 最終ジャッジ日時 | 2023-11-21 03:58:24 |
| 合計ジャッジ時間 | 32,950 ms |
|
ジャッジサーバーID （参考情報） |
judge12 / judge14 |
（要ログイン）
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 | 2 ms
6,676 KB |
| testcase_01 | AC | 2 ms
6,676 KB |
| testcase_02 | AC | 2 ms
6,676 KB |
| testcase_03 | AC | 2 ms
6,676 KB |
| testcase_04 | AC | 2 ms
6,676 KB |
| testcase_05 | AC | 2 ms
6,676 KB |
| testcase_06 | AC | 2 ms
6,676 KB |
| testcase_07 | AC | 2 ms
6,676 KB |
| testcase_08 | AC | 2 ms
6,676 KB |
| testcase_09 | AC | 2 ms
6,676 KB |
| testcase_10 | AC | 2 ms
6,676 KB |
| testcase_11 | AC | 2 ms
6,676 KB |
| testcase_12 | AC | 1 ms
6,676 KB |
| testcase_13 | AC | 2 ms
6,676 KB |
| testcase_14 | AC | 764 ms
112,088 KB |
| testcase_15 | AC | 807 ms
111,740 KB |
| testcase_16 | AC | 746 ms
111,996 KB |
| testcase_17 | AC | 795 ms
112,124 KB |
| testcase_18 | AC | 772 ms
111,996 KB |
| testcase_19 | AC | 750 ms
111,740 KB |
| testcase_20 | AC | 762 ms
111,612 KB |
| testcase_21 | AC | 790 ms
113,148 KB |
| testcase_22 | AC | 777 ms
111,996 KB |
| testcase_23 | AC | 783 ms
111,996 KB |
| testcase_24 | AC | 674 ms
111,996 KB |
| testcase_25 | AC | 700 ms
111,716 KB |
| testcase_26 | AC | 862 ms
111,484 KB |
| testcase_27 | AC | 714 ms
111,996 KB |
| testcase_28 | AC | 789 ms
111,996 KB |
| testcase_29 | AC | 809 ms
111,484 KB |
| testcase_30 | AC | 780 ms
111,740 KB |
| testcase_31 | AC | 760 ms
111,740 KB |
| testcase_32 | AC | 769 ms
111,740 KB |
| testcase_33 | AC | 831 ms
111,740 KB |
| testcase_34 | AC | 764 ms
111,716 KB |
| testcase_35 | AC | 706 ms
111,996 KB |
| testcase_36 | AC | 1,017 ms
111,740 KB |
| testcase_37 | AC | 704 ms
111,484 KB |
| testcase_38 | AC | 995 ms
111,740 KB |
| testcase_39 | AC | 917 ms
111,740 KB |
| testcase_40 | AC | 931 ms
111,740 KB |
| testcase_41 | AC | 786 ms
111,612 KB |
| testcase_42 | AC | 788 ms
111,996 KB |
| testcase_43 | AC | 767 ms
112,124 KB |
| testcase_44 | AC | 788 ms
111,740 KB |
ソースコード
#line 1 "/home/maspy/compro/library/my_template.hpp"
#if defined(LOCAL)
#include <my_template_compiled.hpp>
#else
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using u32 = unsigned int;
using u64 = unsigned long long;
using i128 = __int128;
using u128 = unsigned __int128;
using f128 = __float128;
template <class T>
constexpr T infty = 0;
template <>
constexpr int infty<int> = 1'000'000'000;
template <>
constexpr ll infty<ll> = ll(infty<int>) * infty<int> * 2;
template <>
constexpr u32 infty<u32> = infty<int>;
template <>
constexpr u64 infty<u64> = infty<ll>;
template <>
constexpr i128 infty<i128> = i128(infty<ll>) * infty<ll>;
template <>
constexpr double infty<double> = infty<ll>;
template <>
constexpr long double infty<long double> = infty<ll>;
using pi = pair<ll, ll>;
using vi = vector<ll>;
template <class T>
using vc = vector<T>;
template <class T>
using vvc = vector<vc<T>>;
template <class T>
using vvvc = vector<vvc<T>>;
template <class T>
using vvvvc = vector<vvvc<T>>;
template <class T>
using vvvvvc = vector<vvvvc<T>>;
template <class T>
using pq = priority_queue<T>;
template <class T>
using pqg = priority_queue<T, vector<T>, greater<T>>;
#define vv(type, name, h, ...) \
vector<vector<type>> name(h, vector<type>(__VA_ARGS__))
#define vvv(type, name, h, w, ...) \
vector<vector<vector<type>>> name( \
h, vector<vector<type>>(w, vector<type>(__VA_ARGS__)))
#define vvvv(type, name, a, b, c, ...) \
vector<vector<vector<vector<type>>>> name( \
a, vector<vector<vector<type>>>( \
b, vector<vector<type>>(c, vector<type>(__VA_ARGS__))))
// https://trap.jp/post/1224/
#define FOR1(a) for (ll _ = 0; _ < ll(a); ++_)
#define FOR2(i, a) for (ll i = 0; i < ll(a); ++i)
#define FOR3(i, a, b) for (ll i = a; i < ll(b); ++i)
#define FOR4(i, a, b, c) for (ll i = a; i < ll(b); i += (c))
#define FOR1_R(a) for (ll i = (a)-1; i >= ll(0); --i)
#define FOR2_R(i, a) for (ll i = (a)-1; i >= ll(0); --i)
#define FOR3_R(i, a, b) for (ll i = (b)-1; i >= ll(a); --i)
#define overload4(a, b, c, d, e, ...) e
#define overload3(a, b, c, d, ...) d
#define FOR(...) overload4(__VA_ARGS__, FOR4, FOR3, FOR2, FOR1)(__VA_ARGS__)
#define FOR_R(...) overload3(__VA_ARGS__, FOR3_R, FOR2_R, FOR1_R)(__VA_ARGS__)
#define FOR_subset(t, s) \
for (ll t = (s); t >= 0; t = (t == 0 ? -1 : (t - 1) & (s)))
#define all(x) x.begin(), x.end()
#define len(x) ll(x.size())
#define elif else if
#define eb emplace_back
#define mp make_pair
#define mt make_tuple
#define fi first
#define se second
#define stoi stoll
int popcnt(int x) { return __builtin_popcount(x); }
int popcnt(u32 x) { return __builtin_popcount(x); }
int popcnt(ll x) { return __builtin_popcountll(x); }
int popcnt(u64 x) { return __builtin_popcountll(x); }
int popcnt_mod_2(int x) { return __builtin_parity(x); }
int popcnt_mod_2(u32 x) { return __builtin_parity(x); }
int popcnt_mod_2(ll x) { return __builtin_parityll(x); }
int popcnt_mod_2(u64 x) { return __builtin_parityll(x); }
// (0, 1, 2, 3, 4) -> (-1, 0, 1, 1, 2)
int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }
int topbit(u32 x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }
int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }
int topbit(u64 x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }
// (0, 1, 2, 3, 4) -> (-1, 0, 1, 0, 2)
int lowbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); }
int lowbit(u32 x) { return (x == 0 ? -1 : __builtin_ctz(x)); }
int lowbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }
int lowbit(u64 x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }
template <typename T>
T floor(T a, T b) {
return a / b - (a % b && (a ^ b) < 0);
}
template <typename T>
T ceil(T x, T y) {
return floor(x + y - 1, y);
}
template <typename T>
T bmod(T x, T y) {
return x - y * floor(x, y);
}
template <typename T>
pair<T, T> divmod(T x, T y) {
T q = floor(x, y);
return {q, x - q * y};
}
template <typename T, typename U>
T SUM(const vector<U> &A) {
T sm = 0;
for (auto &&a: A) sm += a;
return sm;
}
#define MIN(v) *min_element(all(v))
#define MAX(v) *max_element(all(v))
#define LB(c, x) distance((c).begin(), lower_bound(all(c), (x)))
#define UB(c, x) distance((c).begin(), upper_bound(all(c), (x)))
#define UNIQUE(x) \
sort(all(x)), x.erase(unique(all(x)), x.end()), x.shrink_to_fit()
template <typename T>
T POP(deque<T> &que) {
T a = que.front();
que.pop_front();
return a;
}
template <typename T>
T POP(pq<T> &que) {
T a = que.top();
que.pop();
return a;
}
template <typename T>
T POP(pqg<T> &que) {
T a = que.top();
que.pop();
return a;
}
template <typename T>
T POP(vc<T> &que) {
T a = que.back();
que.pop_back();
return a;
}
template <typename F>
ll binary_search(F check, ll ok, ll ng, bool check_ok = true) {
if (check_ok) assert(check(ok));
while (abs(ok - ng) > 1) {
auto x = (ng + ok) / 2;
(check(x) ? ok : ng) = x;
}
return ok;
}
template <typename F>
double binary_search_real(F check, double ok, double ng, int iter = 100) {
FOR(iter) {
double x = (ok + ng) / 2;
(check(x) ? ok : ng) = x;
}
return (ok + ng) / 2;
}
template <class T, class S>
inline bool chmax(T &a, const S &b) {
return (a < b ? a = b, 1 : 0);
}
template <class T, class S>
inline bool chmin(T &a, const S &b) {
return (a > b ? a = b, 1 : 0);
}
// ? は -1
vc<int> s_to_vi(const string &S, char first_char) {
vc<int> A(S.size());
FOR(i, S.size()) { A[i] = (S[i] != '?' ? S[i] - first_char : -1); }
return A;
}
template <typename T, typename U>
vector<T> cumsum(vector<U> &A, int off = 1) {
int N = A.size();
vector<T> B(N + 1);
FOR(i, N) { B[i + 1] = B[i] + A[i]; }
if (off == 0) B.erase(B.begin());
return B;
}
// stable sort
template <typename T>
vector<int> argsort(const vector<T> &A) {
vector<int> ids(len(A));
iota(all(ids), 0);
sort(all(ids),
[&](int i, int j) { return (A[i] == A[j] ? i < j : A[i] < A[j]); });
return ids;
}
// A[I[0]], A[I[1]], ...
template <typename T>
vc<T> rearrange(const vc<T> &A, const vc<int> &I) {
vc<T> B(len(I));
FOR(i, len(I)) B[i] = A[I[i]];
return B;
}
#endif
#line 1 "/home/maspy/compro/library/other/io.hpp"
#define FASTIO
#include <unistd.h>
// https://judge.yosupo.jp/submission/21623
namespace fastio {
static constexpr uint32_t SZ = 1 << 17;
char ibuf[SZ];
char obuf[SZ];
char out[100];
// pointer of ibuf, obuf
uint32_t pil = 0, pir = 0, por = 0;
struct Pre {
char num[10000][4];
constexpr Pre() : num() {
for (int i = 0; i < 10000; i++) {
int n = i;
for (int j = 3; j >= 0; j--) {
num[i][j] = n % 10 | '0';
n /= 10;
}
}
}
} constexpr pre;
inline void load() {
memcpy(ibuf, ibuf + pil, pir - pil);
pir = pir - pil + fread(ibuf + pir - pil, 1, SZ - pir + pil, stdin);
pil = 0;
if (pir < SZ) ibuf[pir++] = '\n';
}
inline void flush() {
fwrite(obuf, 1, por, stdout);
por = 0;
}
void rd(char &c) {
do {
if (pil + 1 > pir) load();
c = ibuf[pil++];
} while (isspace(c));
}
void rd(string &x) {
x.clear();
char c;
do {
if (pil + 1 > pir) load();
c = ibuf[pil++];
} while (isspace(c));
do {
x += c;
if (pil == pir) load();
c = ibuf[pil++];
} while (!isspace(c));
}
template <typename T>
void rd_real(T &x) {
string s;
rd(s);
x = stod(s);
}
template <typename T>
void rd_integer(T &x) {
if (pil + 100 > pir) load();
char c;
do
c = ibuf[pil++];
while (c < '-');
bool minus = 0;
if constexpr (is_signed<T>::value || is_same_v<T, i128>) {
if (c == '-') { minus = 1, c = ibuf[pil++]; }
}
x = 0;
while ('0' <= c) { x = x * 10 + (c & 15), c = ibuf[pil++]; }
if constexpr (is_signed<T>::value || is_same_v<T, i128>) {
if (minus) x = -x;
}
}
void rd(int &x) { rd_integer(x); }
void rd(ll &x) { rd_integer(x); }
void rd(i128 &x) { rd_integer(x); }
void rd(u32 &x) { rd_integer(x); }
void rd(u64 &x) { rd_integer(x); }
void rd(u128 &x) { rd_integer(x); }
void rd(double &x) { rd_real(x); }
void rd(long double &x) { rd_real(x); }
void rd(f128 &x) { rd_real(x); }
template <class T, class U>
void rd(pair<T, U> &p) {
return rd(p.first), rd(p.second);
}
template <size_t N = 0, typename T>
void rd_tuple(T &t) {
if constexpr (N < std::tuple_size<T>::value) {
auto &x = std::get<N>(t);
rd(x);
rd_tuple<N + 1>(t);
}
}
template <class... T>
void rd(tuple<T...> &tpl) {
rd_tuple(tpl);
}
template <size_t N = 0, typename T>
void rd(array<T, N> &x) {
for (auto &d: x) rd(d);
}
template <class T>
void rd(vc<T> &x) {
for (auto &d: x) rd(d);
}
void read() {}
template <class H, class... T>
void read(H &h, T &... t) {
rd(h), read(t...);
}
void wt(const char c) {
if (por == SZ) flush();
obuf[por++] = c;
}
void wt(const string s) {
for (char c: s) wt(c);
}
void wt(const char *s) {
size_t len = strlen(s);
for (size_t i = 0; i < len; i++) wt(s[i]);
}
template <typename T>
void wt_integer(T x) {
if (por > SZ - 100) flush();
if (x < 0) { obuf[por++] = '-', x = -x; }
int outi;
for (outi = 96; x >= 10000; outi -= 4) {
memcpy(out + outi, pre.num[x % 10000], 4);
x /= 10000;
}
if (x >= 1000) {
memcpy(obuf + por, pre.num[x], 4);
por += 4;
} else if (x >= 100) {
memcpy(obuf + por, pre.num[x] + 1, 3);
por += 3;
} else if (x >= 10) {
int q = (x * 103) >> 10;
obuf[por] = q | '0';
obuf[por + 1] = (x - q * 10) | '0';
por += 2;
} else
obuf[por++] = x | '0';
memcpy(obuf + por, out + outi + 4, 96 - outi);
por += 96 - outi;
}
template <typename T>
void wt_real(T x) {
ostringstream oss;
oss << fixed << setprecision(15) << double(x);
string s = oss.str();
wt(s);
}
void wt(int x) { wt_integer(x); }
void wt(ll x) { wt_integer(x); }
void wt(i128 x) { wt_integer(x); }
void wt(u32 x) { wt_integer(x); }
void wt(u64 x) { wt_integer(x); }
void wt(u128 x) { wt_integer(x); }
void wt(double x) { wt_real(x); }
void wt(long double x) { wt_real(x); }
void wt(f128 x) { wt_real(x); }
template <class T, class U>
void wt(const pair<T, U> val) {
wt(val.first);
wt(' ');
wt(val.second);
}
template <size_t N = 0, typename T>
void wt_tuple(const T t) {
if constexpr (N < std::tuple_size<T>::value) {
if constexpr (N > 0) { wt(' '); }
const auto x = std::get<N>(t);
wt(x);
wt_tuple<N + 1>(t);
}
}
template <class... T>
void wt(tuple<T...> tpl) {
wt_tuple(tpl);
}
template <class T, size_t S>
void wt(const array<T, S> val) {
auto n = val.size();
for (size_t i = 0; i < n; i++) {
if (i) wt(' ');
wt(val[i]);
}
}
template <class T>
void wt(const vector<T> val) {
auto n = val.size();
for (size_t i = 0; i < n; i++) {
if (i) wt(' ');
wt(val[i]);
}
}
void print() { wt('\n'); }
template <class Head, class... Tail>
void print(Head &&head, Tail &&... tail) {
wt(head);
if (sizeof...(Tail)) wt(' ');
print(forward<Tail>(tail)...);
}
// gcc expansion. called automaticall after main.
void __attribute__((destructor)) _d() { flush(); }
} // namespace fastio
using fastio::read;
using fastio::print;
using fastio::flush;
#define INT(...) \
int __VA_ARGS__; \
read(__VA_ARGS__)
#define LL(...) \
ll __VA_ARGS__; \
read(__VA_ARGS__)
#define U32(...) \
u32 __VA_ARGS__; \
read(__VA_ARGS__)
#define U64(...) \
u64 __VA_ARGS__; \
read(__VA_ARGS__)
#define STR(...) \
string __VA_ARGS__; \
read(__VA_ARGS__)
#define CHAR(...) \
char __VA_ARGS__; \
read(__VA_ARGS__)
#define DBL(...) \
double __VA_ARGS__; \
read(__VA_ARGS__)
#define VEC(type, name, size) \
vector<type> name(size); \
read(name)
#define VV(type, name, h, w) \
vector<vector<type>> name(h, vector<type>(w)); \
read(name)
void YES(bool t = 1) { print(t ? "YES" : "NO"); }
void NO(bool t = 1) { YES(!t); }
void Yes(bool t = 1) { print(t ? "Yes" : "No"); }
void No(bool t = 1) { Yes(!t); }
void yes(bool t = 1) { print(t ? "yes" : "no"); }
void no(bool t = 1) { yes(!t); }
#line 3 "main.cpp"
#line 2 "/home/maspy/compro/library/ds/segtree/segtree.hpp"
template <class Monoid>
struct SegTree {
using MX = Monoid;
using X = typename MX::value_type;
using value_type = X;
vc<X> dat;
int n, log, size;
SegTree() {}
SegTree(int n) { build(n); }
template <typename F>
SegTree(int n, F f) {
build(n, f);
}
SegTree(const vc<X>& v) { build(v); }
void build(int m) {
build(m, [](int i) -> X { return MX::unit(); });
}
void build(const vc<X>& v) {
build(len(v), [&](int i) -> X { return v[i]; });
}
template <typename F>
void build(int m, F f) {
n = m, log = 1;
while ((1 << log) < n) ++log;
size = 1 << log;
dat.assign(size << 1, MX::unit());
FOR(i, n) dat[size + i] = f(i);
FOR_R(i, 1, size) update(i);
}
X get(int i) { return dat[size + i]; }
vc<X> get_all() { return {dat.begin() + size, dat.begin() + size + n}; }
void update(int i) { dat[i] = Monoid::op(dat[2 * i], dat[2 * i + 1]); }
void set(int i, const X& x) {
assert(i < n);
dat[i += size] = x;
while (i >>= 1) update(i);
}
void multiply(int i, const X& x) {
assert(i < n);
i += size;
dat[i] = Monoid::op(dat[i], x);
while (i >>= 1) update(i);
}
X prod(int L, int R) {
assert(0 <= L && L <= R && R <= n);
X vl = Monoid::unit(), vr = Monoid::unit();
L += size, R += size;
while (L < R) {
if (L & 1) vl = Monoid::op(vl, dat[L++]);
if (R & 1) vr = Monoid::op(dat[--R], vr);
L >>= 1, R >>= 1;
}
return Monoid::op(vl, vr);
}
X prod_all() { return dat[1]; }
template <class F>
int max_right(F check, int L) {
assert(0 <= L && L <= n && check(Monoid::unit()));
if (L == n) return n;
L += size;
X sm = Monoid::unit();
do {
while (L % 2 == 0) L >>= 1;
if (!check(Monoid::op(sm, dat[L]))) {
while (L < size) {
L = 2 * L;
if (check(Monoid::op(sm, dat[L]))) { sm = Monoid::op(sm, dat[L++]); }
}
return L - size;
}
sm = Monoid::op(sm, dat[L++]);
} while ((L & -L) != L);
return n;
}
template <class F>
int min_left(F check, int R) {
assert(0 <= R && R <= n && check(Monoid::unit()));
if (R == 0) return 0;
R += size;
X sm = Monoid::unit();
do {
--R;
while (R > 1 && (R % 2)) R >>= 1;
if (!check(Monoid::op(dat[R], sm))) {
while (R < size) {
R = 2 * R + 1;
if (check(Monoid::op(dat[R], sm))) { sm = Monoid::op(dat[R--], sm); }
}
return R + 1 - size;
}
sm = Monoid::op(dat[R], sm);
} while ((R & -R) != R);
return 0;
}
// prod_{l<=i<r} A[i xor x]
X xor_prod(int l, int r, int xor_val) {
static_assert(Monoid::commute);
X x = Monoid::unit();
for (int k = 0; k < log + 1; ++k) {
if (l >= r) break;
if (l & 1) { x = Monoid::op(x, dat[(size >> k) + ((l++) ^ xor_val)]); }
if (r & 1) { x = Monoid::op(x, dat[(size >> k) + ((--r) ^ xor_val)]); }
l /= 2, r /= 2, xor_val /= 2;
}
return x;
}
};
#line 2 "/home/maspy/compro/library/alg/monoid/min.hpp"
template <typename E>
struct Monoid_Min {
using X = E;
using value_type = X;
static constexpr X op(const X &x, const X &y) noexcept { return min(x, y); }
static constexpr X unit() { return infty<E>; }
static constexpr bool commute = true;
};
#line 2 "/home/maspy/compro/library/alg/monoid/max.hpp"
template <typename E>
struct Monoid_Max {
using X = E;
using value_type = X;
static constexpr X op(const X &x, const X &y) noexcept { return max(x, y); }
static constexpr X unit() { return -infty<E>; }
static constexpr bool commute = true;
};
#line 1 "/home/maspy/compro/library/ds/segtree/segtree_2d.hpp"
// 点の重複 OK
template <typename Monoid, typename XY, bool SMALL_X = false>
struct SegTree_2D {
using MX = Monoid;
using S = typename MX::value_type;
static_assert(MX::commute);
int N;
// X to idx
vc<XY> keyX;
int minX;
// top node の点列
vc<XY> all_Y;
vc<int> pos;
// segtree data
int NX, log, size;
vc<int> indptr;
vc<S> dat;
// fractional cascading
vc<int> to_left;
SegTree_2D(vc<XY>& X, vc<XY>& Y)
: SegTree_2D(len(X), [&](int i) -> tuple<XY, XY, S> {
return {X[i], Y[i], MX::unit()};
}) {}
SegTree_2D(vc<XY>& X, vc<XY>& Y, vc<S>& vals)
: SegTree_2D(len(X), [&](int i) -> tuple<XY, XY, S> {
return {X[i], Y[i], vals[i]};
}) {}
// f(i) = (x,y,val)
template <typename F>
SegTree_2D(int N, F f) {
vc<XY> X(N), Y(N);
vc<S> wt(N);
FOR(i, N) {
auto [a, b, c] = f(i);
X[i] = a, Y[i] = b, wt[i] = c;
}
if (!SMALL_X) {
keyX = X;
UNIQUE(keyX);
NX = len(keyX);
} else {
minX = (X.empty() ? 0 : MIN(X));
NX = (X.empty() ? 1 : MAX(X) - minX + 1);
}
log = 0;
while ((1 << log) < NX) ++log;
size = (1 << log);
vc<int> IX(N);
FOR(i, N) IX[i] = xtoi(X[i]);
indptr.assign(2 * size, 0);
for (auto i: IX) {
i += size;
while (i) indptr[i]++, i /= 2;
}
indptr = cumsum<int>(indptr);
dat.assign(2 * indptr.back(), MX::unit());
to_left.assign(indptr[size], 0);
vc<int> ptr = indptr;
vc<int> I = argsort(Y);
pos.resize(N);
FOR(i, N) pos[I[i]] = i;
for (auto raw_idx: I) {
int i = IX[raw_idx] + size;
int j = -1;
while (i) {
int p = ptr[i];
ptr[i]++;
dat[indptr[i + 1] + p] = wt[raw_idx];
if (j != -1) { to_left[p] = (j % 2 == 0); }
j = i, i /= 2;
}
}
to_left = cumsum<int>(to_left);
FOR(i, 2 * size) {
int off = 2 * indptr[i], n = indptr[i + 1] - indptr[i];
FOR_R(j, 1, n) {
dat[off + j] = MX::op(dat[off + 2 * j + 0], dat[off + 2 * j + 1]);
}
}
all_Y = Y;
sort(all(all_Y));
}
// 最初に与えた点群の index
void multiply(int raw_idx, S val) {
int i = 1, p = pos[raw_idx];
while (1) {
multiply_i(i, p - indptr[i], val);
if (i >= size) break;
int lc = to_left[p] - to_left[indptr[i]];
int rc = (p - indptr[i]) - lc;
if (to_left[p + 1] - to_left[p]) {
p = indptr[2 * i + 0] + lc;
i = 2 * i + 0;
} else {
p = indptr[2 * i + 1] + rc;
i = 2 * i + 1;
}
}
}
// 最初に与えた点群の index
void set(int raw_idx, S val) {
int i = 1, p = pos[raw_idx];
while (1) {
set_i(i, p - indptr[i], val);
if (i >= size) break;
int lc = to_left[p] - to_left[indptr[i]];
int rc = (p - indptr[i]) - lc;
if (to_left[p + 1] - to_left[p]) {
p = indptr[2 * i + 0] + lc;
i = 2 * i + 0;
} else {
p = indptr[2 * i + 1] + rc;
i = 2 * i + 1;
}
}
}
S prod(XY lx, XY rx, XY ly, XY ry) {
int L = xtoi(lx), R = xtoi(rx);
S res = MX::unit();
auto dfs = [&](auto& dfs, int i, int l, int r, int a, int b) -> void {
if (a == b || R <= l || r <= L) return;
if (L <= l && r <= R) {
res = MX::op(res, prod_i(i, a, b));
return;
}
int la = to_left[indptr[i] + a] - to_left[indptr[i]];
int ra = a - la;
int lb = to_left[indptr[i] + b] - to_left[indptr[i]];
int rb = b - lb;
int m = (l + r) / 2;
dfs(dfs, 2 * i + 0, l, m, la, lb);
dfs(dfs, 2 * i + 1, m, r, ra, rb);
};
dfs(dfs, 1, 0, size, LB(all_Y, ly), LB(all_Y, ry));
return res;
}
// 矩形内の全点を数える, NlogN
int count(XY lx, XY rx, XY ly, XY ry) {
int L = xtoi(lx), R = xtoi(rx);
int res = 0;
auto dfs = [&](auto& dfs, int i, int l, int r, int a, int b) -> void {
if (a == b || R <= l || r <= L) return;
if (L <= l && r <= R) {
res += b - a;
return;
}
int la = to_left[indptr[i] + a] - to_left[indptr[i]];
int ra = a - la;
int lb = to_left[indptr[i] + b] - to_left[indptr[i]];
int rb = b - lb;
int m = (l + r) / 2;
dfs(dfs, 2 * i + 0, l, m, la, lb);
dfs(dfs, 2 * i + 1, m, r, ra, rb);
};
dfs(dfs, 1, 0, size, LB(all_Y, ly), LB(all_Y, ry));
return res;
}
private:
inline int xtoi(XY x) {
if constexpr (SMALL_X) return clamp<XY>(x - minX, 0, NX);
return LB(keyX, x);
}
S prod_i(int i, int a, int b) {
int LID = indptr[i], n = indptr[i + 1] - indptr[i];
int off = 2 * LID;
int L = n + a, R = n + b;
S val = MX::unit();
while (L < R) {
if (L & 1) val = MX::op(val, dat[off + (L++)]);
if (R & 1) val = MX::op(dat[off + (--R)], val);
L >>= 1, R >>= 1;
}
return val;
}
void multiply_i(int i, int j, S val) {
int LID = indptr[i], n = indptr[i + 1] - indptr[i];
int off = 2 * LID;
j += n;
while (j) {
dat[off + j] = MX::op(dat[off + j], val);
j >>= 1;
}
}
void set_i(int i, int j, S val) {
int LID = indptr[i], n = indptr[i + 1] - indptr[i];
int off = 2 * LID;
j += n;
dat[off + j] = val;
while (j > 1) {
j /= 2;
dat[off + j] = MX::op(dat[off + 2 * j + 0], dat[off + 2 * j + 1]);
}
}
};
#line 8 "main.cpp"
void solve() {
LL(N);
STR(S);
auto calc = [&]() -> pair<vi, vi> {
vi A(N), B(N);
FOR(i, N) A[i] = (S[i] == '(' ? +1 : -1);
FOR(i, N) B[i] = (S[i] == ')' ? -1 : +1);
A = cumsum<ll>(A);
B = cumsum<ll>(B);
vi dp1(N + 1, -infty<int>);
vi dp2(N + 1, -infty<int>);
dp1[0] = dp2[0] = 0;
// dp1 から bracket を作ると加点
SegTree<Monoid_Min<ll>> seg(A);
SegTree_2D<Monoid_Max<ll>, int, true> S_ev(
ceil<int>(N + 1, 2), [&](int i) -> tuple<int, int, ll> {
return {2 * i, B[2 * i], -infty<ll>};
});
SegTree_2D<Monoid_Max<ll>, int, true> S_od(
floor<int>(N + 1, 2), [&](int i) -> tuple<int, int, ll> {
return {2 * i + 1, B[2 * i + 1], -infty<ll>};
});
vc<int> I;
FOR(i, N + 1) {
if (i > 0 && A[i - 1] > A[i]) {
chmax(dp1[i], dp1[i - 1]);
chmax(dp1[i], dp2[i - 1]);
chmax(dp2[i], dp1[i - 1]);
chmax(dp2[i], dp2[i - 1]);
int l = seg.min_left([&](auto e) -> bool { return e >= A[i]; }, i);
/*
for (auto& j: I) {
if (j < l) continue;
if ((i + j) % 2) continue;
bool ok = (B[j] <= B[i]);
if (ok) {
chmax(dp2[i], dp1[j] + 1);
chmax(dp2[i], dp2[j]);
}
}
*/
if (i % 2 == 0) {
chmax(dp2[i], S_ev.prod(l, i, -infty<int>, B[i] + 1));
}
if (i % 2 == 1) {
chmax(dp2[i], S_od.prod(l, i, -infty<int>, B[i] + 1));
}
}
while (len(I)) {
int j = I.back();
if (B[j] < B[i]) break;
POP(I);
if (j % 2 == 0) S_ev.set(j / 2, -infty<ll>);
if (j % 2 == 1) S_od.set(j / 2, -infty<ll>);
}
I.eb(i);
if (i % 2 == 0) S_ev.set(i / 2, max(dp1[i] + 1, dp2[i]));
if (i % 2 == 1) S_od.set(i / 2, max(dp1[i] + 1, dp2[i]));
}
return {dp1, dp2};
};
auto [dp11, dp12] = calc();
for (auto& x: S) {
if (x != '?') x = '(' + ')' - x;
}
reverse(all(S));
auto [dp21, dp22] = calc();
ll ANS = 0;
FOR(n, N + 1) { chmax(ANS, dp11[n] + dp22[N - n]); }
print(ANS);
}
signed main() {
int T = 1;
// INT(T);
FOR(T) solve();
return 0;
}