結果

問題 No.910 素数部分列
ユーザー hitonanodehitonanode
提出日時 2019-10-20 13:20:58
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 4 ms / 1,000 ms
コード長 3,646 bytes
コンパイル時間 1,703 ms
コンパイル使用メモリ 168,812 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-07-02 17:25:34
合計ジャッジ時間 2,852 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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
6,812 KB
testcase_01 AC 2 ms
6,940 KB
testcase_02 AC 1 ms
6,940 KB
testcase_03 AC 2 ms
6,944 KB
testcase_04 AC 2 ms
6,944 KB
testcase_05 AC 1 ms
6,940 KB
testcase_06 AC 2 ms
6,944 KB
testcase_07 AC 1 ms
6,944 KB
testcase_08 AC 2 ms
6,944 KB
testcase_09 AC 1 ms
6,940 KB
testcase_10 AC 1 ms
6,940 KB
testcase_11 AC 1 ms
6,940 KB
testcase_12 AC 1 ms
6,940 KB
testcase_13 AC 2 ms
6,944 KB
testcase_14 AC 2 ms
6,940 KB
testcase_15 AC 1 ms
6,940 KB
testcase_16 AC 2 ms
6,944 KB
testcase_17 AC 1 ms
6,944 KB
testcase_18 AC 2 ms
6,944 KB
testcase_19 AC 1 ms
6,940 KB
testcase_20 AC 2 ms
6,940 KB
testcase_21 AC 2 ms
6,940 KB
testcase_22 AC 1 ms
6,940 KB
testcase_23 AC 4 ms
6,940 KB
testcase_24 AC 4 ms
6,940 KB
testcase_25 AC 4 ms
6,944 KB
testcase_26 AC 4 ms
6,940 KB
testcase_27 AC 4 ms
6,944 KB
testcase_28 AC 3 ms
6,940 KB
testcase_29 AC 3 ms
6,944 KB
testcase_30 AC 4 ms
6,940 KB
testcase_31 AC 3 ms
6,940 KB
testcase_32 AC 4 ms
6,940 KB
testcase_33 AC 3 ms
6,940 KB
testcase_34 AC 3 ms
6,940 KB
testcase_35 AC 4 ms
6,944 KB
testcase_36 AC 3 ms
6,940 KB
testcase_37 AC 3 ms
6,940 KB
testcase_38 AC 3 ms
6,944 KB
testcase_39 AC 4 ms
6,944 KB
testcase_40 AC 3 ms
6,944 KB
testcase_41 AC 4 ms
6,944 KB
testcase_42 AC 3 ms
6,944 KB
testcase_43 AC 3 ms
6,940 KB
testcase_44 AC 4 ms
6,940 KB
testcase_45 AC 3 ms
6,944 KB
testcase_46 AC 4 ms
6,940 KB
testcase_47 AC 3 ms
6,940 KB
testcase_48 AC 3 ms
6,944 KB
testcase_49 AC 2 ms
6,940 KB
testcase_50 AC 3 ms
6,944 KB
testcase_51 AC 2 ms
6,940 KB
testcase_52 AC 3 ms
6,944 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 # 

#include <bits/stdc++.h>
using namespace std;
using lint = long long int;
using pint = pair<int, int>;
using plint = pair<lint, lint>;
struct fast_ios { fast_ios(){ cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((lint)(x).size())
#define POW2(n) (1LL << (n))
#define FOR(i, begin, end) for(int i=(begin),i##_end_=(end);i<i##_end_;i++)
#define IFOR(i, begin, end) for(int i=(end)-1,i##_begin_=(begin);i>=i##_begin_;i--)
#define REP(i, n) FOR(i,0,n)
#define IREP(i, n) IFOR(i,0,n)
template<typename T> void ndarray(vector<T> &vec, int len) { vec.resize(len); }
template<typename T, typename... Args> void ndarray(vector<T> &vec, int len, Args... args) { vec.resize(len); for (auto &v : vec) ndarray(v, args...); }
template<typename T> bool mmax(T &m, const T q) { if (m < q) {m = q; return true;} else return false; }
template<typename T> bool mmin(T &m, const T q) { if (m > q) {m = q; return true;} else return false; }
template<typename T1, typename T2> pair<T1, T2> operator+(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first + r.first, l.second + r.second); }
template<typename T1, typename T2> pair<T1, T2> operator-(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first - r.first, l.second - r.second); }
template<typename T> istream &operator>>(istream &is, vector<T> &vec){ for (auto &v : vec) is >> v; return is; }
///// This part below is only for debug, not used /////
template<typename T> ostream &operator<<(ostream &os, const vector<T> &vec){ os << "["; for (auto v : vec) os << v << ","; os << "]"; return os; }
template<typename T> ostream &operator<<(ostream &os, const deque<T> &vec){ os << "deq["; for (auto v : vec) os << v << ","; os << "]"; return os; }
template<typename T> ostream &operator<<(ostream &os, const set<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> ostream &operator<<(ostream &os, const unordered_set<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> ostream &operator<<(ostream &os, const multiset<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> ostream &operator<<(ostream &os, const unordered_multiset<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &pa){ os << "(" << pa.first << "," << pa.second << ")"; return os; }
template<typename TK, typename TV> ostream &operator<<(ostream &os, const map<TK, TV> &mp){ os << "{"; for (auto v : mp) os << v.first << "=>" << v.second << ","; os << "}"; return os; }
template<typename TK, typename TV> ostream &operator<<(ostream &os, const unordered_map<TK, TV> &mp){ os << "{"; for (auto v : mp) os << v.first << "=>" << v.second << ","; os << "}"; return os; }
#define dbg(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ") " << __FILE__ << endl;
///// END /////

int main()
{
    int N;
    string S;
    cin >> N >> S;
    int one = 0;
    int nine = 0;
    int ret = 0;
    for (auto c : S)
    {
        if (c == '3' or c == '5' or c == '7') ret++;
        else if (c == '1')
        {
            one++;
        }
        else if (c == '9')
        {
            nine++;
            if (one and nine)
            {
                one--;
                nine--;
                ret++;
            }
        }
        else exit(8);
    }
    int n991 = min(nine / 2, one);
    ret += n991;
    cout << ret + (one - n991) / 2 << endl;
}
0