Submission #1320967

#	Time	Username	Problem	Language	Result	Execution time	Memory
1320967		tolga	Feast (NOI19_feast)	C++20	59 / 100	1095 ms	6828 KiB

feast

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define endl '\n'

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

  int n, k;
  cin >> n >> k;
  vector<ll> a(n);
  for (int i = 0; i < n; i++)
    cin >> a[i];

  vector<array<ll, 2>> dp1(k + 1), dp2(k + 1);
  // dp[i][j][0/1] = upto i with j subarrays
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= k; j++) {
      dp2[j][0] = max(dp1[j][0], dp1[j][1]);
      dp2[j][1] = max(dp1[j - 1][0], dp1[j][1]) + a[i - 1];
    }
    swap(dp1, dp2);
  }

  ll ans = 0;
  for (int j = 1; j <= k; j++)
    ans = max({ans, dp1[j][0], dp1[j][1]});
  cout << ans << endl;
}

• 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