Submission #8,810

2024-01-31 11:07:52

cpp17

Accepted 100/100

63ms

17184 KiB

#include <iostream>
#include <vector>
#include <algorithm>
#include <climits>
#include <queue>
#include <set>
#include <map>

using namespace std;
using ll = long long;

signed main()
{
	{
		ios_base::sync_with_stdio(0);
		cin.tie(0);
		cout.tie(0);
	}

	map<ll, int> count;
	vector<ll> sides;
	ll size;
	cin >> size;
	for (int i = 0; i < size; i++)
	{
		ll next;
		cin >> next;
		if (++count[next] == 2)
		{
			sides.push_back(next);
		}
	}

	sort(sides.begin(), sides.end());
	reverse(sides.begin(), sides.end());

	if (sides.size() > 0 && count[sides[0]] >= 4)
	{
		cout << sides[0] * sides[0] << "\n";
	}
	else
	{
		cout << ((sides.size() >= 2) ? sides[0] * sides[1] : 0) << "\n";
	}
}

	Sum	Test	Verdict	Time	Memory
subtask1	0/0
		1	Accepted	3ms	1828 KiB
		2	Accepted	3ms	2024 KiB
		3	Accepted	3ms	2232 KiB
subtask2	10/10
		4	Accepted	3ms	2456 KiB
		5	Accepted	3ms	2688 KiB
		6	Accepted	3ms	2740 KiB
		7	Accepted	3ms	2864 KiB
		8	Accepted	3ms	3084 KiB
subtask3	10/10
		9	Accepted	3ms	3048 KiB
		10	Accepted	3ms	3288 KiB
		11	Accepted	3ms	3508 KiB
		12	Accepted	3ms	3864 KiB
		13	Accepted	9ms	3704 KiB
		14	Accepted	10ms	3980 KiB
subtask4	15/15
		15	Accepted	3ms	3964 KiB
		16	Accepted	3ms	4068 KiB
		17	Accepted	2ms	4028 KiB
		18	Accepted	3ms	3912 KiB
		19	Accepted	3ms	3912 KiB
		20	Accepted	3ms	4292 KiB
		21	Accepted	3ms	4316 KiB
		22	Accepted	3ms	4292 KiB
		23	Accepted	3ms	4384 KiB
		24	Accepted	3ms	4280 KiB
subtask5	20/20
		25	Accepted	3ms	4404 KiB
		26	Accepted	4ms	5092 KiB
		27	Accepted	4ms	5044 KiB
		28	Accepted	4ms	5096 KiB
		29	Accepted	4ms	5220 KiB
		30	Accepted	4ms	5212 KiB
		31	Accepted	4ms	5212 KiB
		32	Accepted	4ms	4616 KiB
subtask6	15/15
		33	Accepted	3ms	4540 KiB
		34	Accepted	41ms	13668 KiB
		35	Accepted	48ms	17156 KiB
		36	Accepted	46ms	17160 KiB
		37	Accepted	48ms	17064 KiB
		38	Accepted	48ms	17168 KiB
		39	Accepted	46ms	17060 KiB
		40	Accepted	4ms	4652 KiB
		41	Accepted	28ms	7304 KiB
subtask7	30/30
		42	Accepted	25ms	5036 KiB
		43	Accepted	57ms	16668 KiB
		44	Accepted	57ms	17060 KiB
		45	Accepted	61ms	17064 KiB
		46	Accepted	61ms	17064 KiB
		47	Accepted	63ms	17080 KiB
		48	Accepted	57ms	17184 KiB
		49	Accepted	57ms	17076 KiB
		50	Accepted	37ms	7416 KiB
		51	Accepted	41ms	8856 KiB