제출 #758963

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
758963		ridiche	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	83 ms	10080 KiB

Main

#include <iostream>
#define INT_MAX 9223372036854775807
#define int long long

using namespace std;

int a[200005];
int cr[200005], cn[200005];
int dr[200005], dn[200005];

signed main()
{
	int n;
	cin >> n;
	for (int i = 0; i < n; i++)
	{
		cin >> a[i];
	}
	cn[0] = a[0];
	for (int i = 1; i < n; i++)
	{
		cn[i] = a[i] + cr[i - 1];
		cr[i] = cr[i - 1];
		if (cn[i] <= cn[i - 1])
		{
			cr[i] += (cn[i - 1] - cn[i]) + 1;
			cn[i] = cn[i - 1] + 1;
		}
	}
	dn[n - 1] = a[n - 1];
	for (int i = n - 2; i >= 0; i--)
	{
		dn[i] = a[i] + dr[i + 1];
		dr[i] = dr[i + 1];
		if (dn[i] <= dn[i + 1])
		{
			dr[i] += (dn[i + 1] - dn[i]) + 1;
			dn[i] = dn[i + 1] + 1;
		}
	}
	int r = INT_MAX;
	for (int i = 0; i < n; i++)
	{
		r = min(r, max(cr[i], dr[i]));
	}
	cout << r;
}

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