結果

問題 No.910 素数部分列
ユーザー fumiphysfumiphys
提出日時 2019-10-18 22:52:48
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 8 ms / 1,000 ms
コード長 3,826 bytes
コンパイル時間 1,577 ms
コンパイル使用メモリ 170,076 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-06-25 21:49:41
合計ジャッジ時間 3,048 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge1
このコードへのチャレンジ
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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 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 1 ms
5,376 KB
testcase_06 AC 1 ms
5,376 KB
testcase_07 AC 2 ms
5,376 KB
testcase_08 AC 2 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 2 ms
5,376 KB
testcase_12 AC 1 ms
5,376 KB
testcase_13 AC 2 ms
5,376 KB
testcase_14 AC 2 ms
5,376 KB
testcase_15 AC 2 ms
5,376 KB
testcase_16 AC 2 ms
5,376 KB
testcase_17 AC 1 ms
5,376 KB
testcase_18 AC 2 ms
5,376 KB
testcase_19 AC 2 ms
5,376 KB
testcase_20 AC 2 ms
5,376 KB
testcase_21 AC 1 ms
5,376 KB
testcase_22 AC 2 ms
5,376 KB
testcase_23 AC 5 ms
5,376 KB
testcase_24 AC 6 ms
5,376 KB
testcase_25 AC 6 ms
5,376 KB
testcase_26 AC 5 ms
5,376 KB
testcase_27 AC 5 ms
5,376 KB
testcase_28 AC 6 ms
5,376 KB
testcase_29 AC 8 ms
5,376 KB
testcase_30 AC 8 ms
5,376 KB
testcase_31 AC 7 ms
5,376 KB
testcase_32 AC 7 ms
5,376 KB
testcase_33 AC 8 ms
5,376 KB
testcase_34 AC 8 ms
5,376 KB
testcase_35 AC 7 ms
5,376 KB
testcase_36 AC 7 ms
5,376 KB
testcase_37 AC 7 ms
5,376 KB
testcase_38 AC 6 ms
5,376 KB
testcase_39 AC 6 ms
5,376 KB
testcase_40 AC 6 ms
5,376 KB
testcase_41 AC 6 ms
5,376 KB
testcase_42 AC 6 ms
5,376 KB
testcase_43 AC 6 ms
5,376 KB
testcase_44 AC 6 ms
5,376 KB
testcase_45 AC 7 ms
5,376 KB
testcase_46 AC 6 ms
5,376 KB
testcase_47 AC 6 ms
5,376 KB
testcase_48 AC 4 ms
5,376 KB
testcase_49 AC 3 ms
5,376 KB
testcase_50 AC 3 ms
5,376 KB
testcase_51 AC 3 ms
5,376 KB
testcase_52 AC 4 ms
5,376 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 # 

// includes
#include <bits/stdc++.h>
using namespace std;

// macros
#define pb emplace_back
#define mk make_pair
#define FOR(i, a, b) for(int i=(a);i<(b);++i)
#define rep(i, n) FOR(i, 0, n)
#define rrep(i, n) for(int i=((int)(n)-1);i>=0;i--)
#define irep(itr, st) for(auto itr = (st).begin(); itr != (st).end(); ++itr)
#define irrep(itr, st) for(auto itr = (st).rbegin(); itr != (st).rend(); ++itr)
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define UNIQUE(v) v.erase(unique(v.begin(), v.end()), v.end())
#define bit(n) (1LL<<(n))
// functions
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(a > b){a = b; return 1;} return 0;}
template <typename T> istream &operator>>(istream &is, vector<T> &vec){for(auto &v: vec)is >> v; return is;}
template <typename T> ostream &operator<<(ostream &os, const vector<T>& vec){for(int i = 0; i < vec.size(); i++){ os << vec[i]; if(i + 1 != vec.size())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){os << p.first << " " << p.second; return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << itr->first << ":" << itr->second; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const unordered_map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << itr->first << ":" << itr->second; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}
//  types
using ll = long long int;
using P = pair<int, int>;
// constants
const int inf = 1e9;
const ll linf = 1LL << 50;
const double EPS = 1e-10;
const int mod = 1000000007;
const int dx[4] = {-1, 0, 1, 0};
const int dy[4] = {0, -1, 0, 1};
// io
struct fast_io{
  fast_io(){ios_base::sync_with_stdio(false); cin.tie(0); cout << fixed << setprecision(20);}
} fast_io_;


int main(int argc, char const* argv[])
{
  int n; cin >> n;
  string s; cin >> s;
  int res = 0;
  string t = "";
  rep(i, sz(s)){
      if(s[i] != '1' && s[i] != '9'){
          ++res;
      }else{
          t += s[i];
      }
  }
  vector<bool> used(sz(t), false);
  int acc = 0;
  int r = 1;
  while(r < sz(t) && t[r] == '1')r++;
  rep(i, sz(t)){
      if(t[i] == '9'){
          if(!used[i])acc++;
      }else{
        if(r < i){
            r = i;
            while(r < sz(t) && t[r] == '1')r++;
        }
        if(r < sz(t)){
            used[i] = true;
            used[r] = true;
            ++res;
            r++;
            while(r < sz(t) && t[r] == '1')r++;
        }else{
          if(acc > 1){
              acc -= 2;
              used[i] = true;
              ++res;
          }
        }
      }
  }
  int cnt = 0;
  rep(i, sz(t)){
      if(t[i] == '1' && !used[i])cnt++;
  }
  res += cnt / 2;
  cout << res << endl;
  return 0;
}
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