제출 #924566

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
924566		boris_mihov	Financial Report (JOI21_financial)	C++17	14 / 100	4042 ms	3680 KiB

Main

#include <algorithm>
#include <iostream>
#include <numeric>
#include <cassert>
#include <vector>
#include <queue>
#include <cmath>
#include <set>

typedef long long llong;
const int MAXN = 300000 + 10;
const int INF  = 1e9;

int n, d;
int a[MAXN];
int dp[MAXN];
int perm[MAXN];
bool bigger[MAXN];

void solve()
{
    std::iota(perm + 1, perm + 1 + n, 1);
    std::sort(perm + 1, perm + 1 + n, [&](int x, int y)
    {
        return a[x] > a[y] || (a[x] == a[y] && x < y);
    });

    int res = 0;
    for (int i = 1 ; i <= n ; ++i)
    {
        int len = 0;
        for (int j = perm[i] + 1 ; j <= n ; ++j)
        {
            len += bigger[j];
            if (len > d)
            {
                break;
            }

            if (bigger[j])
            {
                dp[perm[i]] = std::max(dp[perm[i]], dp[j]);
            } else
            {
                len = 0;
            }
        }

        dp[perm[i]]++;
        bigger[perm[i]] = true;
        res = std::max(res, dp[perm[i]]);
    }

    std::cout << res << '\n';
}

void input()
{
    std::cin >> n >> d;
    for (int i = 1 ; i <= n ; ++i)
    {
        std::cin >> a[i];
    }
}

void fastIOI()
{
    std::ios_base :: sync_with_stdio(0);
    std::cout.tie(nullptr);
    std::cin.tie(nullptr);
}

int main()
{
    fastIOI();
    input();
    solve();

    return 0;
}

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