Submission #1209998

#	Time	Username	Problem	Language	Result	Execution time	Memory
1209998		blazer	Feast (NOI19_feast)	C++20	59 / 100	1094 ms	7456 KiB

feast

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

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int N, K;
    cin >> N >> K;
    vector<ll> A(N);
    for (int i = 0; i < N; ++i) cin >> A[i];

    vector<ll> dp(N + 1, 0);
    for (int k = 1; k <= K; ++k) {
        vector<ll> new_dp(N + 1, 0);
        ll max_diff = LLONG_MIN;
        ll prefix = 0;
        for (int i = 1; i <= N; ++i) {
            prefix += A[i - 1];
            max_diff = max(max_diff, dp[i - 1] - prefix + A[i - 1]);
            new_dp[i] = max(new_dp[i - 1], max_diff + prefix);
        }
        dp.swap(new_dp);
    }

    cout << dp[N] << '\n';
    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