Submission #1248637

#	Time	Username	Problem	Language	Result	Execution time	Memory
1248637		arashmemar	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	66 ms	5084 KiB

Main

#include <bits/stdc++.h>
using namespace std;

const int maxn = 2e5 + 100;

long long int a[maxn], pc[maxn], sc[maxn];

int main()
{
	int n;
	cin >> n;
	for (int i = 1;i <= n;i++)
	{
		cin >> a[i];
		a[i - 1] = a[i] - a[i - 1];
	}
	a[n] = 0;
	for (int i = 1;i < n;i++)
	{
		int tmp = 0;
		if (a[i] <= 0)
		{
			tmp = 1 - a[i];
		}
		pc[i] = pc[i - 1] + tmp;
	}
	for (int i = n - 1;i;i--)
	{
		int tmp = 0;
		if (a[i] >= 0)
		{
			tmp = a[i] + 1;
		}
		sc[i] = sc[i + 1] + tmp;
	}

	long long int ans = 1e18;

	for (int i = 0;i < n;i++)
	{
		ans = min(ans, max(pc[i], sc[i + 1]));
	}
	cout << ans;
}

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