Submission #602354

#	Time	Username	Problem	Language	Result	Execution time	Memory
602354		CyberCow	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	30 ms	9556 KiB

Main

#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <string>
#include <cmath>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <fstream>
#include <iomanip>
#include <iterator>
#include <stack>
#include <deque>
using namespace std;
using ll = long long;
ll v[200005], v1[200005], v2[200005], q1[200005], q2[200005];

void solve()
{
	int n, i, j, x;
	cin >> n;
	for (i = 1; i <= n; i++)
	{
		cin >> v[i];
		v1[i] = v[i];
		v2[i] = v[i];
	}
	for (i = n; i > 0; i--)
	{
		v1[i] = max(v1[i], v1[i + 1] + 1);
		q1[i] = q1[i + 1] + max(0LL, v[i + 1] - v[i] + 1);
	}
	for (i = 1; i <= n; i++)
	{
		v2[i] = max(v2[i], v2[i - 1] + 1);
		q2[i] = q2[i - 1] + max(0LL, v[i - 1] - v[i] + 1);
	}
	ll ans = 1e18+49;
	for (i = 1; i <= n; i++)
	{
		ans = min(ans, max(q1[i], q2[i]));
		//ans = min(ans, max(max(q2[i - 1], q1[i + 1]), max(v1[i], v2[i]) - v[i]));
	}
	cout << ans << endl;
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	int tt = 1;
	//cin >> tt;
	while (tt--)
	{
		solve();
	}
	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:22:12: warning: unused variable 'j' [-Wunused-variable]
   22 |  int n, i, j, x;
      |            ^
Main.cpp:22:15: warning: unused variable 'x' [-Wunused-variable]
   22 |  int n, i, j, x;
      |               ^

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