Submission #1221745

#	Time	Username	Problem	Language	Result	Execution time	Memory
1221745		Trustfulcomic	Financial Report (JOI21_financial)	C++20	48 / 100	853 ms	1114112 KiB

Main

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

typedef pair<int,int> ii;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    int n,d; cin >> n >> d;
    vector<int> as(n);
    for (int& i : as) cin >> i;

    vector<vector<int>> dp(n, vector<int>(n+1, -1));
    vector<multiset<int>> maxs(n+1);

    dp[0][1] = as[0];
    maxs[1].insert(as[0]);

    for (int i = 1; i<n; i++) {
        if (i > d) {
            // Smazat i-d-1
            for (int j = 0; j<n+1; j++) {
                if (dp[i-d-1][j] == -1) continue;
                if (maxs[j].find(dp[i-d-1][j]) != maxs[j].end()) {
                    maxs[j].erase(maxs[j].find(dp[i-d-1][j]));
                }
            }
        }

        dp[i][1] = as[i];

        for (int j = 0; j<n+1; j++) {
            if (maxs[j].size() > 0) {
                int minim = *(maxs[j].begin());
                if (minim < as[i]) {
                    if (dp[i][j+1] == -1) {
                        dp[i][j+1] = as[i];
                    } else {
                        dp[i][j+1] = min(dp[i][j+1], as[i]);
                    }
                } else {
                    if (dp[i][j] == -1) {
                        dp[i][j] = minim;
                    } else {
                        dp[i][j] = min(dp[i][j], minim);
                    }
                }
            }
        }

        for (int j = 0; j<n+1; j++) {
            if (dp[i][j] == -1) continue;
            maxs[j].insert(dp[i][j]);
        }
    }

    int maxim = 0;
    for (int j = 0; j<n+1; j++) {
        if (dp.back()[j] != -1) maxim = j;
    }

    cout << maxim << endl;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 20 / 20
• Subtask 4: 0 / 12
• Subtask 5: 0 / 5
• Subtask 6: 0 / 35