제출 #1145052

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1145052		ezzzay	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	50 ms	5100 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
#define pb push_back
const int N=3e5+5;
int a[N];
int ps[N];
int sf[N];
signed main(){
	int n;
	cin>>n;
	for(int i=1;i<=n;i++)cin>>a[i];
	for(int i=1;i<=n;i++){
		ps[i]=ps[i-1];
		if(a[i]<=a[i-1])ps[i]+=a[i-1]-a[i]+1;
	}
	for(int i=n;i>=1;i--){
		sf[i]=sf[i+1];
		if(a[i]<=a[i+1])sf[i]+=a[i+1]-a[i]+1;
	}
	int ans=1e18;
	for(int i=0;i<=n;i++){
		if(ps[i]+a[i]== sf[i+1]+a[i+1])ans=min(ans,max(ps[i]+1,sf[i+1]+1));
		else ans=min(ans,max(ps[i],sf[i+1]));
	}
	cout<<ans;
}

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