Submission #1309715

#	Time	Username	Problem	Language	Result	Execution time	Memory
1309715		aaaaaaaa	Feast (NOI19_feast)	C++20	41 / 100	30 ms	30604 KiB

feast

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int mxN = 2001;
int dp[mxN][mxN], a[mxN];
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr); cout.tie(nullptr);
    int n, k;
    cin >> n >> k;
    for(int i = 1; i <= n; ++i){
        cin >> a[i];
        a[i] = a[i - 1] + a[i];
    }
    for(int j = 1; j <= k; ++j){
        int mx = 0;
        for(int i = 1; i <= n; ++i){
            dp[i][j] = max(dp[i - 1][j - 1], dp[i - 1][j]);
            mx = max(mx, dp[i][j - 1] - a[i]);
            dp[i][j] = max(dp[i][j], mx + a[i]);           
        }
    }
    cout << dp[n][k] << "\n";
    return 0;
}   

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