結果

問題 No.1961 Clear Brackets
ユーザー PCTprobabilityPCTprobability
提出日時 2022-05-24 09:32:41
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 5,102 bytes
コンパイル時間 4,436 ms
コンパイル使用メモリ 267,588 KB
実行使用メモリ 6,948 KB
最終ジャッジ日時 2024-09-20 13:31:53
合計ジャッジ時間 6,323 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge3
このコードへのチャレンジ
（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
5,248 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 2 ms
5,376 KB
testcase_04 AC 2 ms
5,376 KB
testcase_05 AC 2 ms
5,376 KB
testcase_06 AC 2 ms
5,376 KB
testcase_07 AC 2 ms
5,376 KB
testcase_08 AC 1 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 1 ms
5,376 KB
testcase_11 AC 2 ms
5,376 KB
testcase_12 AC 2 ms
5,376 KB
testcase_13 AC 2 ms
5,376 KB
testcase_14 AC 9 ms
6,656 KB
testcase_15 AC 9 ms
6,784 KB
testcase_16 WA -
testcase_17 AC 9 ms
6,656 KB
testcase_18 AC 9 ms
6,784 KB
testcase_19 WA -
testcase_20 AC 8 ms
6,784 KB
testcase_21 WA -
testcase_22 WA -
testcase_23 AC 9 ms
6,784 KB
testcase_24 AC 5 ms
6,656 KB
testcase_25 AC 5 ms
6,784 KB
testcase_26 AC 7 ms
6,656 KB
testcase_27 AC 6 ms
6,656 KB
testcase_28 AC 8 ms
6,784 KB
testcase_29 AC 7 ms
6,912 KB
testcase_30 WA -
testcase_31 WA -
testcase_32 WA -
testcase_33 AC 6 ms
6,784 KB
testcase_34 WA -
testcase_35 AC 6 ms
6,784 KB
testcase_36 AC 6 ms
6,784 KB
testcase_37 AC 5 ms
6,784 KB
testcase_38 AC 5 ms
6,784 KB
testcase_39 AC 5 ms
6,784 KB
testcase_40 AC 8 ms
6,656 KB
testcase_41 WA -
testcase_42 WA -
testcase_43 WA -
testcase_44 WA -
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 # 

#include <bits/stdc++.h>
using namespace std;
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#endif
using ll = long long;
using ld = long double;
using ull = unsigned long long;
#define endl "\n"
typedef pair<int,int> Pii;
#define REP(i, n) for (int i = 0; i < (n); ++i)
#define REP3(i, m, n) for (int i = (m); (i) < int(n); ++ (i))
#define FOR(i,a,b) for(ll i=a;i<=(ll)(b);i++)
#define rep(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
#define ALL(x) begin(x), end(x)
#define PB push_back
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#define all(s) (s).begin(),(s).end()
#define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i)
#define drep(i, n) drep2(i, n, 0)
#define rever(vec) reverse(vec.begin(), vec.end())
#define sor(vec) sort(vec.begin(), vec.end())
#define fi first
#define se second
#define pb push_back
#define P pair<ll,ll>
#define PQminll priority_queue<ll, vector<ll>, greater<ll>>
#define PQmaxll priority_queue<ll,vector<ll>,less<ll>>
#define PQminP priority_queue<P, vector<P>, greater<P>>
#define PQmaxP priority_queue<P,vector<P>,less<P>>
#define NP next_permutation
typedef string::const_iterator State;
class ParseError {};
//const ll mod = 1000000009;
const ll mod = 998244353;
//const ll mod = 1000000007;
const ll inf = 4100000000000000000ll;
const ld eps = ld(0.00000000000001);
const long double pi = 3.141592653589793;
template<class T>void vcin(vector<T> &n){for(int i=0;i<int(n.size());i++) cin>>n[i];}
template<class T,class K>void vcin(vector<T> &n,vector<K> &m){for(int i=0;i<int(n.size());i++) cin>>n[i]>>m[i];}
template<class T>void vcout(vector<T> &n){for(int i=0;i<int(n.size());i++){cout<<n[i]<<" ";}cout<<endl;}
template<class T>void vcin(vector<vector<T>> &n){for(int i=0;i<int(n.size());i++){for(int j=0;j<int(n[i].size());j++){cin>>n[i][j];}}}
template<class T>void vcout(vector<vector<T>> &n){for(int i=0;i<int(n.size());i++){for(int j=0;j<int(n[i].size());j++){cout<<n[i][j]<<" ";}cout<<endl;}cout<<endl;}
void yes(bool a){cout<<(a?"yes":"no")<<endl;}
void YES(bool a){cout<<(a?"YES":"NO")<<endl;}
void Yes(bool a){cout<<(a?"Yes":"No")<<endl;}
void possible(bool a){ cout<<(a?"possible":"impossible")<<endl; }
void Possible(bool a){ cout<<(a?"Possible":"Impossible")<<endl; }
void POSSIBLE(bool a){ cout<<(a?"POSSIBLE":"IMPOSSIBLE")<<endl; }
template<class T>void print(T a){cout<<a<<endl;}
template<class T>auto min(const T& a){ return *min_element(all(a)); }
template<class T>auto max(const T& a){ return *max_element(all(a)); }
template<class T,class F>void print(pair<T,F> a){cout<<a.fi<<" "<<a.se<<endl;}
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0;}
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0;}
template<class T> void ifmin(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}}
template<class T> void ifmax(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}}
ll fastgcd(ll u,ll v){ll shl=0;while(u&&v&&u!=v){bool eu=!(u&1);bool ev=!(v&1);if(eu&&ev){++shl;u>>=1;v>>=1;}else if(eu&&!ev){u>>=1;}else if(!eu&&ev){v>>=1;}else if(u>=v){u=(u-v)>>1;}else{ll tmp=u;u=(v-u)>>1;v=tmp;}}return !u?v<<shl:u<<shl;}
ll modPow(ll a, ll n, ll mod) { if(mod==1) return 0;ll ret = 1; ll p = a % mod; while (n) { if (n & 1) ret = ret * p % mod; p = p * p % mod; n >>= 1; } return ret; }
vector<ll> divisor(ll x){ vector<ll> ans; for(ll i = 1; i * i <= x; i++){ if(x % i == 0) {ans.push_back(i); if(i*i!=x){ ans.push_back(x / ans[i]);}}}sor(ans); return ans; }
ll pop(ll x){return __builtin_popcountll(x);}
ll poplong(ll x){ll y=-1;while(x){x/=2;y++;}return y;}

void cincout() {
  ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
  cout<< fixed << setprecision(20);
}

int main() {
  cincout();
  ll n;
  cin>>n;
  string s;
  cin>>s;
  assert(1<=n&&n<=200000);
  assert(int(s.size())==n);
  for(int i=0;i<n;i++) assert(s[i]=='?'||s[i]==')'||s[i]=='(');
  vector<ll> l(n+1,-inf),r(n+1,-inf);
  l[0]=0;
  ll sum=0,ex=0,sc=0;
  for(int i=0;i<n;i++){
    if(s[i]!='('&&sum<=1){
      l[i+1]=sc+ex;
    }
    if(s[i]=='('){
      sum++;
      ex=1;
    }
    if(s[i]==')'){
      if(sum){
        sum--;
        ex=1;
      }
      else{
        sc+=ex;
        ex=0;
      }
    }
    if(s[i]=='?'){
      if(i==n-1||ex||s[i+1]=='('){
        if(sum){
          sum--;
          ex=1;
        }
        else{
          sc+=ex;
          ex=0;
        }
      }
      else{
        sum++;
        ex=1;
      }
    }
  }
  r[n]=0;
  sum=0,ex=0,sc=0;
  for(int i=n-1;i>=0;i--){
    if(s[i]!=')'&&sum<=0){
      r[i]=sc+ex;
    }
    if(s[i]==')'){
      sum++;
      ex=1;
    }
    if(s[i]=='('){
      if(sum){
        sum--;
        ex=1;
      }
      else{
        sc+=ex;
        ex=0;
      }
    }
    if(s[i]=='?'){
      if(i==0||ex||s[i+1]==')'){
        if(sum){
          sum--;
          ex=1;
        }
        else{
          sc+=ex;
          ex=0;
        }
      }
      else{
        sum++;
        ex=1;
      }
    }
  }
  ll ans=0;
  for(int i=0;i<=n;i++) chmax(ans,l[i]+r[i]);
  cout<<ans<<endl;
}
0