Submission #1329396

#	Time	Username	Problem	Language	Result	Execution time	Memory
1329396		jochis	Feast (NOI19_feast)	C++20	59 / 100	1095 ms	5816 KiB

feast

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

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    
    int n, k;
    cin >> n >> k;
    
    vector<long long> a(n + 1);
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
    }
    const long long NEG_INF = LLONG_MIN / 2;

    vector<long long> f(k + 1, 0); 
    vector<long long> g(k + 1, NEG_INF); 

    for (int i = 1; i <= n; i++) {
        vector<long long> f_prev = f;

        for (int j = 1; j <= k; j++) {
            long long extend = (g[j] == NEG_INF) ? NEG_INF : g[j] + a[i];
            long long start  = (f_prev[j-1] == NEG_INF) ? NEG_INF : f_prev[j-1] + a[i];
            g[j] = max(extend, start);

            f[j] = max(f_prev[j], g[j]);
        }
    }

    cout << f[k] << endl;

    return 0;
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 8
• Subtask 3: 18 / 18
• Subtask 4: 10 / 10
• Subtask 5: 11 / 11
• Subtask 6: 20 / 20
• Subtask 7: 0 / 29