Submission #939625

#	Time	Username	Problem	Language	Result	Execution time	Memory
939625		LucaIlie	The short shank; Redemption (BOI21_prison)	C++17	15 / 100	2019 ms	118480 KiB

prison

#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 4000;
const int MAX_D = MAX_N;
const int INF = MAX_N + 1;

int minPrisoners[MAX_N + 1][MAX_D + 1], t[MAX_N + 1], prisoners[MAX_N + 1];

int main() {
    int n, d, s;

    cin >> n >> d >> s;
    d++;
    for ( int i = 1; i <= n; i++ ) {
        cin >> t[i];
        t[i] -= i;
    }

    minPrisoners[0][0] = 0;
    for ( int i = 1; i <= n; i++ )
        minPrisoners[i][0] = INF;
    for ( int k = 1; k <= d; k++ ) {
        minPrisoners[0][k] = INF;
        for ( int i = 1; i <= n; i++ ) {
            prisoners[i] = minPrisoners[i - 1][k - 1];
            int minT = s;
            for ( int j = i; j >= 1; j-- ) {
                minT = min( minT, t[j] );
                if ( minT + i <= s )
                    prisoners[j]++;
            }

            minPrisoners[i][k] = INF;
            for ( int j = i; j >= 1; j-- )
                minPrisoners[i][k] = min( minPrisoners[i][k], prisoners[j] );
        }
    }

    cout << minPrisoners[n][d] << "\n";

    return 0;
}

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