Submission #1014211

#	Time	Username	Problem	Language	Result	Execution time	Memory
1014211		vjudge1	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	23 ms	8796 KiB

Main

// 23 - 12 - 23 

#include<bits/stdc++.h>

using namespace std;

#define read() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define day() time_t now = time(0);char* x = ctime(&now);cerr<<"Right Now Is : "<<x<<"\n"

#define int long long
#define ii pair<int,int>
#define X first
#define Y second 

const long long MAX = (int)2e5 + 5;
const long long INF = (int)1e9;
const long long MOD = (int)1e9 + 7;

int n,a[MAX];
int dp[MAX],b[MAX],f[MAX];

signed main(){
		
	read();
	
	cin >> n;
	for(int i = 1;i <= n;i++){
		cin >> a[i];
		b[i] = a[i];
		dp[i] = dp[i - 1];
		if(i > 1){
			if(b[i] <= b[i - 1]){
				dp[i] += b[i - 1] + 1 - b[i];
			}
		}
	}
	
	for(int i = n;i >= 1;i--){
		f[i] = f[i + 1];
		if(i < n){
			if(b[i] <= b[i + 1])f[i] += b[i + 1] + 1 - b[i];
		}
	}
	
	int res = f[1];
	for(int i = 2;i <= n;i++){
		res = min(res,max(f[i],dp[i]));
	}
	
	cout << res;
	
}

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