답안 #516241

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
516241	2022-01-20T18:50:14 Z	sidon	Hacker (BOI15_hac)	C++17	100 / 100	53 ms	8588 KB

hac

#include <bits/stdc++.h>
using namespace std;

int main() {
	ios::sync_with_stdio(0), cin.tie(0);
	int N; cin >> N;
	int a[N] = {}, b[2*N], pref = 0;
	int x = (N + 1) / 2;

	for(int &i : a) cin >> i;

	for(int i = 0; i - x < N; i++) {
		if(i && i < N) a[i] += a[i-1];
		pref = a[i % N];
		if(i >= N) pref += a[N - 1];
		if(i >= x)
			b[i-x+N] = b[i-x] = pref - a[i-x];
	}

	int *l = a, *r = a, res = 0;

	for(int i = 0; i < 2*N; i++) {
		while(l != r && b[*(r-1)] >= b[i]) --r;
		(*r++) = i;
		while(*l <= i-x) ++l;

		if(i >= x-1) res = max(res, b[*l]);
	}

	cout << res;
}

Subtask #1

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	308 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	312 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	0 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	0 ms	204 KB	Output is correct
13	Correct	1 ms	236 KB	Output is correct
14	Correct	0 ms	204 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	0 ms	204 KB	Output is correct

Subtask #2

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	308 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	312 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	0 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	0 ms	204 KB	Output is correct
13	Correct	1 ms	236 KB	Output is correct
14	Correct	0 ms	204 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	0 ms	204 KB	Output is correct
19	Correct	0 ms	204 KB	Output is correct
20	Correct	0 ms	204 KB	Output is correct
21	Correct	1 ms	316 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	0 ms	204 KB	Output is correct
28	Correct	1 ms	204 KB	Output is correct
29	Correct	0 ms	204 KB	Output is correct
30	Correct	1 ms	332 KB	Output is correct
31	Correct	1 ms	332 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	1 ms	308 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	8 ms	1484 KB	Output is correct
5	Correct	25 ms	3412 KB	Output is correct
6	Correct	25 ms	4320 KB	Output is correct
7	Correct	30 ms	5168 KB	Output is correct
8	Correct	53 ms	8328 KB	Output is correct

Subtask #4

40.0 / 40.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	308 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	312 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	0 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	0 ms	204 KB	Output is correct
13	Correct	1 ms	236 KB	Output is correct
14	Correct	0 ms	204 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	0 ms	204 KB	Output is correct
19	Correct	0 ms	204 KB	Output is correct
20	Correct	0 ms	204 KB	Output is correct
21	Correct	1 ms	316 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	0 ms	204 KB	Output is correct
28	Correct	1 ms	204 KB	Output is correct
29	Correct	0 ms	204 KB	Output is correct
30	Correct	1 ms	332 KB	Output is correct
31	Correct	1 ms	332 KB	Output is correct
32	Correct	0 ms	204 KB	Output is correct
33	Correct	1 ms	308 KB	Output is correct
34	Correct	1 ms	332 KB	Output is correct
35	Correct	8 ms	1484 KB	Output is correct
36	Correct	25 ms	3412 KB	Output is correct
37	Correct	25 ms	4320 KB	Output is correct
38	Correct	30 ms	5168 KB	Output is correct
39	Correct	53 ms	8328 KB	Output is correct
40	Correct	2 ms	456 KB	Output is correct
41	Correct	2 ms	588 KB	Output is correct
42	Correct	4 ms	708 KB	Output is correct
43	Correct	20 ms	3532 KB	Output is correct
44	Correct	49 ms	8340 KB	Output is correct
45	Correct	14 ms	1740 KB	Output is correct
46	Correct	31 ms	5080 KB	Output is correct
47	Correct	49 ms	8340 KB	Output is correct
48	Correct	39 ms	8588 KB	Output is correct
49	Correct	36 ms	7700 KB	Output is correct
50	Correct	36 ms	7680 KB	Output is correct