Submission #970815

#	Time	Username	Problem	Language	Result	Execution time	Memory
970815		vladilius	The short shank; Redemption (BOI21_prison)	C++17	0 / 100	420 ms	524288 KiB

prison

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int inf = numeric_limits<int> :: max();

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int n, d, t; cin>>n>>d>>t;
    vector<int> a(n + 1);
    for (int i = 1; i <= n; i++){
        cin>>a[i];
    }
    vector<vector<vector<int>>> dp(n + 1, vector<vector<int>>(n + 1, vector<int>(d + 1)));
    for (int i = 1; i <= n; i++){
        priority_queue<int, vector<int>, greater<int>> pq;
        int tt = 0, cnt = 0;
        for (int j = i; j <= n; j++){
            pq.push(a[j] - tt);
            int m = pq.top() + tt;
            cnt += (m <= t);
            dp[i][j][0] = cnt;
            tt++;
        }
    }

    for (int k = 1; k <= d; k++){
        for (int i = 1; i <= n; i++){
            for (int j = i + k; j <= n; j++){
                dp[i][j][k] = inf;
                for (int m = i + k - 1; m <= j - k; m++){
                    dp[i][j][k] = min(dp[i][j][k], dp[i][m][k - 1] + dp[m + 1][j][k - 1]);
                }
            }
        }
    }
    
    cout<<dp[1][n][d]<<"\n";
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 10
• Subtask 3: 0 / 20
• Subtask 4: 0 / 10
• Subtask 5: 0 / 25
• Subtask 6: 0 / 20