Submission #251758

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
251758	2020-07-22T09:30:22 Z	tutis	Hacker (BOI15_hac)	C++17	100 / 100	704 ms	40004 KB

hac

/*input
4
7 6 8 4
*/
#pragma GCC optimize ("O3")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef long double ld;
template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename K>
using ordered_map = tree<T, K, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0), cout.tie(0);
	int n;
	cin >> n;
	ll h[n];
	for (int i = 0; i < n; i++)
		cin >> h[i];
	ll s[3 * n + 1];
	s[0] = h[0];
	for (int i = 1; i < 3 * n + 1; i++)
		s[i] = s[i - 1] + h[i % n];
	ll k = (n + 1) / 2;
	vector<ll>X;
	for (int i = k; i <= 3 * n; i++)
	{
		X.push_back(s[i] - s[i - k]);
	}
	multiset<ll>A;
	for (int i = 0; i < k; i++)
		A.insert(X[i]);
	ll ans = *A.begin();
	for (int i = k; i < (int)X.size(); i++)
	{
		A.insert(X[i]);
		A.erase(A.find(X[i - k]));
		ans = max(ans, *A.begin());
	}
	cout << ans << "\n";
	return 0;
}

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	384 KB	Output is correct

Subtask #2

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	384 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	512 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	2 ms	512 KB	Output is correct
23	Correct	4 ms	768 KB	Output is correct
24	Correct	2 ms	512 KB	Output is correct
25	Correct	4 ms	768 KB	Output is correct
26	Correct	4 ms	768 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	0 ms	384 KB	Output is correct
29	Correct	0 ms	384 KB	Output is correct
30	Correct	3 ms	768 KB	Output is correct
31	Correct	3 ms	768 KB	Output is correct

Subtask #3

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	4 ms	768 KB	Output is correct
4	Correct	66 ms	6636 KB	Output is correct
5	Correct	204 ms	15976 KB	Output is correct
6	Correct	257 ms	20052 KB	Output is correct
7	Correct	300 ms	24028 KB	Output is correct
8	Correct	661 ms	39744 KB	Output is correct

Subtask #4

40.0 / 40.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	384 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	512 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	2 ms	512 KB	Output is correct
23	Correct	4 ms	768 KB	Output is correct
24	Correct	2 ms	512 KB	Output is correct
25	Correct	4 ms	768 KB	Output is correct
26	Correct	4 ms	768 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	0 ms	384 KB	Output is correct
29	Correct	0 ms	384 KB	Output is correct
30	Correct	3 ms	768 KB	Output is correct
31	Correct	3 ms	768 KB	Output is correct
32	Correct	0 ms	384 KB	Output is correct
33	Correct	1 ms	384 KB	Output is correct
34	Correct	4 ms	768 KB	Output is correct
35	Correct	66 ms	6636 KB	Output is correct
36	Correct	204 ms	15976 KB	Output is correct
37	Correct	257 ms	20052 KB	Output is correct
38	Correct	300 ms	24028 KB	Output is correct
39	Correct	661 ms	39744 KB	Output is correct
40	Correct	7 ms	1152 KB	Output is correct
41	Correct	17 ms	1916 KB	Output is correct
42	Correct	24 ms	2716 KB	Output is correct
43	Correct	200 ms	16172 KB	Output is correct
44	Correct	557 ms	39748 KB	Output is correct
45	Correct	88 ms	8172 KB	Output is correct
46	Correct	295 ms	24020 KB	Output is correct
47	Correct	704 ms	39872 KB	Output is correct
48	Correct	400 ms	40004 KB	Output is correct
49	Correct	379 ms	39104 KB	Output is correct
50	Correct	373 ms	39104 KB	Output is correct