Submission #380343

#	Time	Username	Problem	Language	Result	Execution time	Memory
380343		loctildore	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	36 ms	5996 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
#define x first
#define y second
#define elif else if
#define endl '\n'
#define all(x) begin(x), end(x)
ll n,a[200069];
ll dpl[200069],dpr[200069];
ll minimum=LLONG_MAX;
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cin>>n;
  for (int i = 0; i < n; i++) {
    cin>>a[i];
  }
  for (int i = 1; i < n; i++) {
    dpl[i]=dpl[i-1]+max(a[i-1]+1-a[i],(ll)0);
  }
  for (int i = n-2; i >= 0; i--) {
    dpr[i]=dpr[i+1]+max(a[i+1]+1-a[i],(ll)0);
  }
  for (int i = 0; i < n; i++) {
    minimum=min(minimum,max(dpl[i],dpr[i]));
  }
  cout<<minimum<<endl;
  return 0;
}

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