結果

問題 No.919 You Are A Project Manager
コンテスト
ユーザー firiexp
提出日時 2019-10-26 00:09:45
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
CE  
(最新)
AC  
(最初)
実行時間 -
コード長 1,682 bytes
コンパイル時間 912 ms
コンパイル使用メモリ 90,172 KB
最終ジャッジ日時 2024-11-14 21:47:40
合計ジャッジ時間 1,996 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge4
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コンパイルエラー時のメッセージ・ソースコードは、提出者また管理者しか表示できないようにしております。（リジャッジ後のコンパイルエラーは公開されます）
ただし、clay言語の場合は開発者のデバッグのため、公開されます。

コンパイルメッセージ
main.cpp:17:39: error: '::numeric_limits' has not been declared
   17 | template<class T> constexpr T INF = ::numeric_limits<T>::max()/32*15+208;
      |                                       ^~~~~~~~~~~~~~
main.cpp:17:55: error: expected primary-expression before '>' token
   17 | template<class T> constexpr T INF = ::numeric_limits<T>::max()/32*15+208;
      |                                                       ^
main.cpp:17:61: error: no matching function for call to 'max()'
   17 | template<class T> constexpr T INF = ::numeric_limits<T>::max()/32*15+208;
      |                                                        ~~~~~^~
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/string:50,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/bits/locale_classes.h:40,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/bits/ios_base.h:41,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/ios:42,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/ostream:38,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/iostream:39,
                 from main.cpp:1:
/home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
main.cpp:17:61: note:   candidate expects 2 arguments, 0 provided
   17 | template<class T> constexpr T INF = ::numeric_limits<T>::max()/32*15+208;
      |                                                        ~~~~~^~
/home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/bits/stl_algobase.h:300:5: note: candidate: 'templat

ソースコード

diff # 

#include <iostream>
#include <algorithm>
#include <iomanip>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <numeric>
#include <bitset>
#include <cmath>

static const int MOD = 1000000007;
using ll = long long;
using u32 = uint32_t;
using namespace std;

template<class T> constexpr T INF = ::numeric_limits<T>::max()/32*15+208;


template <class T>
ostream& operator<<(ostream& os, vector<T> v) {
    os << "{";
    for (int i = 0; i < v.size(); ++i) {
        if(i) os << ", ";
        os << v[i];
    }
    return os << "}";
}

template <class L, class R>
ostream& operator<<(ostream& os, pair<L, R> p) {
    return os << "{" << p.first << ", " << p.second << "}";
}


int main() {
    int n;
    cin >> n;
    vector<int> v(n);
    for (auto &&i : v) scanf("%d", &i);
    vector<ll> a, b;
    auto u = v;
    ll ans = 0;
    for (int K = n; K >= 1; --K) {
        a.resize(n/K); b.resize(n/K+1);
        for (int i = 0; i < n/K; ++i) {
            nth_element(u.begin()+i*K, u.begin()+i*K+(K-1)/2, u.begin()+(i+1)*K);
            a[i] = u[i*K+(K-1)/2];
        }
        u = v;
        for (int i = 0; i < n/K; ++i) {
            nth_element(u.rbegin()+i*K, u.rbegin()+i*K+(K-1)/2, u.rbegin()+(i+1)*K);
            b[i+1] = b[i]+u[n-(i*K+(K-1)/2)-1];
        }
        u = v;
        for (int i = 0; i < n/K; ++i) {
            b[i+1] = max(b[i+1], b[i]);
        }
        ll p = 0; int cur = 0; ll s = 0;
        for (int i = 0; i < n/K; ++i) {
            while(i*K-1 >= n-K*(n/K+1-cur)) cur++;
            p = max(p, s+b[n/K+1-cur]);
            s += a[i];
        }
        ans = max({ans, p*K, s*K});
    }
    cout << ans << "\n";
    return 0;
}
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