Submission #680596

#	Time	Username	Problem	Language	Result	Execution time	Memory
680596		anonimy	Global Warming (NOI13_gw)	C++14	6 / 40	255 ms	25444 KiB

gw

#include <iostream>
#include <algorithm>
#include <vector>
#include <functional>

using namespace std;

typedef long long ll;
typedef pair<ll, ll> pll;

int main()
{
	ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);

	ll n;
	cin >> n;

	vector<pll> heights(n);
	for (ll i = 0; i < n; i++)
	{
		cin >> heights[i].first;
		heights[i].second = i;
	}

	sort(heights.begin(), heights.end(), greater<pll>());
	vector<bool> used(n, false);

	ll ans = 0, curr = 0;
	for (ll i = 0; i < n; i++)
	{
		ll ind = heights[i].second;
		used[ind] = true;

		if (i < n - 1 && heights[i].first == heights[i + 1].first) continue;

		if ((ind == 0 || (!used[ind - 1])) && (ind == n - 1 || (!used[ind + 1])))
			curr++;
		if (ind && ind < n - 1 && used[ind - 1] && used[ind + 1])
			curr--;

		ans = max(ans, curr);
	}

	cout << ans;
}

• Subtask 1: 6 / 6
• Subtask 2: 0 / 6
• Subtask 3: 0 / 7
• Subtask 4: 0 / 10
• Subtask 5: 0 / 11