oj.uz

답안 #872752

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
872752 2023-11-13T16:37:35 Z sleepntsheep K개의 묶음 (IZhO14_blocks) C++17
18 / 100
 15 ms 79520 KB 
#include <iostream>
#include <stack>
#include <cstring>
#include <vector>
#include <algorithm>
#include <deque>
#include <set>
#include <utility>
#include <array>

using i64 = long long;
using u64 = unsigned long long;
using f64 = double;
using f80 = long double;

using namespace std;
#define ALL(x) x.begin(), x.end()
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false);
#define N 100000


template <typename T, const T& (*F)(const T&, const T&)>
struct opstack
{
    deque<pair<T, T>> a;

    size_t size() { return a.size(); }
    bool empty() { return a.empty(); }

    void push(T x)
    {
        if (size()) a.push_back({x, F(a.back().second, x)});
        else a.push_back({x, x});
    }

    T top() { return a.back().first; }
    T op() { return a.back().second; }
    void pop() { a.pop_back(); }
    void swap(opstack &x) { a.swap(x.a); }

};

template <typename T, const T& (*F)(const T&, const T&)>
struct opdeque
{
    opstack<T, F> f, b, t;

    void rebalance()
    {
        bool s = false;
        if (b.empty()) { s = true; b.swap(f); }
        int y = (b.size() / 2);
        while (y--) { t.push(b.top()); b.pop(); }
        while (b.size()) { f.push(b.top()); b.pop(); }
        while (t.size()) { b.push(t.top()); t.pop(); }
        if (s) b.swap(f);
    }

    size_t size() { return b.size() + f.size(); }
    bool empty() { return size() == 0; }
    void push_front(T x) { f.push(x); }
    void push_back(T x) { b.push(x); }
    T back()
    {
        if (b.empty()) rebalance();
        return b.top();
    }
    T front()
    {
        if (f.empty()) rebalance();
        return f.top();
    }
    void pop_back()
    {
        if (b.empty()) rebalance();
        b.pop();
    }
    void pop_front()
    {
        if (f.empty()) rebalance();
        f.pop();
    }
    T op()
    {
        if (f.empty()) return b.op();
        if (b.empty()) return f.op();
        return F(b.op(), f.op());
    }
};

int n, k, a[N];
i64 dp[101][N];

int main()
{
    memset(dp, 63, sizeof dp);
    ShinLena;
    cin >> n >> k;
    for (int i = 0; i < n; ++i) cin >> a[i];

    {
        opstack<int, std::max> q;
        for (int i = 0; i < n; ++i) q.push(a[i]), dp[0][i] = q.op();
    }

    for (int j = 1; j < k; ++j)
    {
        stack<int> q;
        opdeque<pair<int, int>, std::min> w;
        opdeque<int, std::min> y;
        for (int i = 0; i < n; ++i)
        {
            while (q.size() && a[q.top()] <= a[i]) q.pop();

            if (q.size())
            {
                auto C = min(dp[j][q.top()], dp[j-1][q.top()] + a[i]);
                while (w.size() && w.front().second <= q.top()) w.pop_front();
                if (w.size()) C = min(C, 1ll * w.op().first + a[i]);
                dp[j][i] = C;
            }
            else if (y.size())
            {
                dp[j][i] = y.op() + a[i];
            }

            w.push_back({dp[j-1][i], i});
            y.push_back(dp[j-1][i]);
            q.push(i);
        }
    }

    for (int j = 0; j < k; ++j)
    {
        for (int i = 0; i < n; ++i)
        {
            //cout << dp[j][i] << "   ";
        }
        //cout<<endl;
    }

    cout << dp[k-1][n-1];

    return 0;
}

Subtask #1
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 79452 KB Output is correct
2 Correct 15 ms 79448 KB Output is correct
3 Correct 10 ms 79452 KB Output is correct
4 Correct 9 ms 79504 KB Output is correct
5 Correct 11 ms 79324 KB Output is correct
6 Correct 11 ms 79448 KB Output is correct
7 Correct 10 ms 79448 KB Output is correct
8 Correct 10 ms 79452 KB Output is correct
9 Correct 10 ms 79452 KB Output is correct
10 Correct 10 ms 79288 KB Output is correct
11 Correct 11 ms 79452 KB Output is correct
12 Correct 9 ms 79448 KB Output is correct
13 Incorrect 11 ms 79452 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 79452 KB Output is correct
2 Correct 9 ms 79452 KB Output is correct
3 Correct 10 ms 79348 KB Output is correct
4 Correct 10 ms 79452 KB Output is correct
5 Correct 11 ms 79448 KB Output is correct
6 Correct 11 ms 79496 KB Output is correct
7 Correct 11 ms 79452 KB Output is correct
8 Correct 10 ms 79452 KB Output is correct
9 Correct 11 ms 79452 KB Output is correct
10 Correct 10 ms 79296 KB Output is correct
11 Correct 10 ms 79276 KB Output is correct
12 Correct 10 ms 79448 KB Output is correct
13 Correct 10 ms 79452 KB Output is correct
14 Correct 9 ms 79452 KB Output is correct
15 Correct 10 ms 79452 KB Output is correct
16 Correct 10 ms 79304 KB Output is correct
17 Correct 11 ms 79452 KB Output is correct
18 Correct 10 ms 79304 KB Output is correct
19 Correct 10 ms 79520 KB Output is correct
20 Correct 10 ms 79452 KB Output is correct

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 79452 KB Output is correct
2 Correct 15 ms 79448 KB Output is correct
3 Correct 10 ms 79452 KB Output is correct
4 Correct 9 ms 79504 KB Output is correct
5 Correct 11 ms 79324 KB Output is correct
6 Correct 11 ms 79448 KB Output is correct
7 Correct 10 ms 79448 KB Output is correct
8 Correct 10 ms 79452 KB Output is correct
9 Correct 10 ms 79452 KB Output is correct
10 Correct 10 ms 79288 KB Output is correct
11 Correct 11 ms 79452 KB Output is correct
12 Correct 9 ms 79448 KB Output is correct
13 Incorrect 11 ms 79452 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 79452 KB Output is correct
2 Correct 15 ms 79448 KB Output is correct
3 Correct 10 ms 79452 KB Output is correct
4 Correct 9 ms 79504 KB Output is correct
5 Correct 11 ms 79324 KB Output is correct
6 Correct 11 ms 79448 KB Output is correct
7 Correct 10 ms 79448 KB Output is correct
8 Correct 10 ms 79452 KB Output is correct
9 Correct 10 ms 79452 KB Output is correct
10 Correct 10 ms 79288 KB Output is correct
11 Correct 11 ms 79452 KB Output is correct
12 Correct 9 ms 79448 KB Output is correct
13 Incorrect 11 ms 79452 KB Output isn't correct
14 Halted 0 ms 0 KB -