Submission #1182911

#	Time	Username	Problem	Language	Result	Execution time	Memory
1182911		PieArmy	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	14 ms	4168 KiB

Main

#include<bits/stdc++.h>
typedef long long ll;
#define pb push_back
#define fr first
#define sc second
using namespace std;

int n;
int arr[200023];
ll po[200023],ne[200023];

int main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>arr[i];
		po[i]=po[i-1];
		if(arr[i-1]-arr[i]>=0){
			po[i]+=arr[i-1]-arr[i]+1;
		}
	}
	for(int i=n;i>1;i--){
		ne[i]=ne[i+1];
		if(arr[i-1]-arr[i]<=0){
			ne[i]-=arr[i-1]-arr[i]-1;
		}
	}
	ll ans=123123123123123123;
	for(int i=1;i<=n;i++){
		ans=min(ans,max(po[i],ne[i+1]));
	}
	cout<<ans;
}

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