Submission #460581

#	Time	Username	Problem	Language	Result	Execution time	Memory
460581		MKutayBozkurt	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	40 ms	6960 KiB

Main

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

#define int long long

int32_t main() {
  ios::sync_with_stdio(0); cin.tie(0);
  int n; cin >> n;
  vector<int> a(n + 1);
  for (int i = 1; i <= n; i++) cin >> a[i];
  vector<int> left(n + 1), right(n + 1);
  for (int i = 2; i <= n; i++) {
    left[i] = left[i - 1] + max(0ll, a[i - 1] - a[i] + 1);
  }
  for (int i = n - 1; i > 0; i--) {
    right[i] = right[i + 1] + max(0ll, a[i + 1] - a[i] + 1);
  }
  int ans = min(right[1], left[n]);
  for (int i = 2; i <= n; i++) {
    ans = min(ans, max(left[i], right[i]));
  }
  cout << ans << '\n';
}

• Subtask 1: 40 / 40
• Subtask 2: 60 / 60