Submission #486386

#	Time	Username	Problem	Language	Result	Execution time	Memory
486386		KienTran	Feast (NOI19_feast)	C++14	59 / 100	136 ms	262148 KiB

feast

#include <bits/stdc++.h>
#define int long long

using namespace std;

const int O = 3e5 + 5;

int n, k, a[O];
vector <vector <int>> f[2];

main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> n >> k;
    for (int i = 1; i <= n; ++ i) cin >> a[i];

    for (int i = 0; i < 2; ++ i){
        f[i].resize(n + 1);
        for (int j = 0; j <= n; ++ j) f[i][j].resize(k + 1);
    }

    for (int i = 1; i <= n; ++ i){
        for (int j = 1; j <= k; ++ j){
            f[0][i][j] = max(f[1][i - 1][j - 1], f[0][i - 1][j]) + a[i];
            f[1][i][j] = max({f[0][i][j], f[1][i - 1][j - 1], f[1][i - 1][j]});
        }
    }

    cout << f[1][n][k];
}

Compilation message (stderr)

feast.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main(){
      | ^~~~

• 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