Submission #798200

#	Time	Username	Problem	Language	Result	Execution time	Memory
798200		tch1cherin	Hacker (BOI15_hac)	C++17	40 / 100	1078 ms	1848 KiB

hac

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

int main() {
  int N;
  cin >> N;
  vector<int> A(2 * N);
  for (int i = 0; i < N; i++) {
    cin >> A[i];
    A[i + N] = A[i];
  }
  int M = (N + 1) / 2;
  vector<int> B(2 * N);
  for (int i = 0; i < 2 * N; i++) {
    if (i > 0) {
      B[i] += B[i - 1];
    }
    B[i] += A[i];
    if (i >= M) {
      B[i] -= A[i - M];
    } 
  }
  int ans = 0;
  for (int i = 0; i + M <= 2 * N; i++) {
    int min_val = INT_MAX;
    for (int j = i; j < i + M; j++) {
      min_val = min(min_val, B[j]);
    }
    ans = max(ans, min_val);
  }
  cout << ans << "\n";
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 40