Submission #371228

#	Time	Username	Problem	Language	Result	Execution time	Memory
371228		cheissmart	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	33 ms	4332 KiB

Main

#include <bits/stdc++.h>
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#define PB push_back
#define MP make_pair
#define EB emplace_back
#define ALL(v) (v).begin(), (v).end()
#define debug(x) cerr << "Line(" << __LINE__ << ") -> " << #x << " is " << x << endl

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

const int INF = 1e9 + 7;

signed main()
{
	IO_OP;

	int n;
	cin >> n;
	vi a(n);
	for(int i = 0; i < n; i++)
		cin >> a[i];
	V<ll> p(n), s(n);
	for(int i = 1; i < n; i++)
		p[i] = p[i - 1] + max(0, a[i - 1] - a[i] + 1);
	for(int i = n - 2; i >= 0; i--)
		s[i] = s[i + 1] + max(0, a[i + 1] - a[i] + 1);
	ll ans = 1e18;
	for(int i = 0; i < n; i++) {
		ans = min(ans, max(s[i], p[i]));
	}
	cout << ans << '\n';

}

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