Submission #909403

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
909403	2024-01-17T07:50:06 Z	shoryu386	Hacker (BOI15_hac)	C++17	100 / 100	435 ms	46140 KB

hac

#include <bits/stdc++.h>
using namespace std;
#define MAX 200007
#define int long long
main(){
	int n; cin >> n;
	
	int count = (n+1)/2;
	
	int arr[2*n];
	for (int x = 0; x < n; x++) cin >> arr[x];
	for (int x = 0; x < n; x++) arr[n + x] = arr[x];
	
	int psum[2*n];
	psum[0] = arr[0];
	for (int x = 1; x < 2*n; x++) psum[x] = psum[x-1] + arr[x];
	
	#define rq(a, b) ((a==0) ? psum[b] : psum[b] - psum[a-1])
	
	int hmm[2*n]; memset(hmm, 63, sizeof(hmm));
	int sums[2*n];
	for (int x = 0; x < 2*n; x++){
		int sum = rq(x, x+count-1);
		sums[x] = sum;
	}
	
	multiset<int> ms;
	for (int x = 0; x < count; x++){
		ms.insert(sums[x]);
	}
	
	memset(hmm, -63, sizeof(hmm));
	hmm[0] = *ms.begin();
	
	for (int x = 1; x < n; x++){
		ms.insert(sums[count+x-1]);
		ms.erase(ms.find(sums[x-1]));
		
		hmm[x] = *ms.begin();
	}
	
	int ans = INT_MIN;
	for (int x = 0; x < n; x++){
		ans = max(ans, hmm[x]);
	}
	cout << ans;
}

Compilation message

hac.cpp:5:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    5 | main(){
      | ^~~~

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	0 ms	356 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct

Subtask #2

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	0 ms	356 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	604 KB	Output is correct
23	Correct	2 ms	604 KB	Output is correct
24	Correct	2 ms	604 KB	Output is correct
25	Correct	3 ms	856 KB	Output is correct
26	Correct	3 ms	860 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	2 ms	856 KB	Output is correct
31	Correct	2 ms	856 KB	Output is correct

Subtask #3

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	2 ms	860 KB	Output is correct
4	Correct	36 ms	7260 KB	Output is correct
5	Correct	99 ms	18256 KB	Output is correct
6	Correct	151 ms	22868 KB	Output is correct
7	Correct	154 ms	27600 KB	Output is correct
8	Correct	313 ms	45632 KB	Output is correct

Subtask #4

40.0 / 40.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	0 ms	356 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	604 KB	Output is correct
23	Correct	2 ms	604 KB	Output is correct
24	Correct	2 ms	604 KB	Output is correct
25	Correct	3 ms	856 KB	Output is correct
26	Correct	3 ms	860 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	2 ms	856 KB	Output is correct
31	Correct	2 ms	856 KB	Output is correct
32	Correct	1 ms	348 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	2 ms	860 KB	Output is correct
35	Correct	36 ms	7260 KB	Output is correct
36	Correct	99 ms	18256 KB	Output is correct
37	Correct	151 ms	22868 KB	Output is correct
38	Correct	154 ms	27600 KB	Output is correct
39	Correct	313 ms	45632 KB	Output is correct
40	Correct	5 ms	1116 KB	Output is correct
41	Correct	9 ms	2140 KB	Output is correct
42	Correct	13 ms	2908 KB	Output is correct
43	Correct	102 ms	18388 KB	Output is correct
44	Correct	346 ms	45604 KB	Output is correct
45	Correct	44 ms	9296 KB	Output is correct
46	Correct	149 ms	27420 KB	Output is correct
47	Correct	435 ms	45592 KB	Output is correct
48	Correct	263 ms	46140 KB	Output is correct
49	Correct	227 ms	44880 KB	Output is correct
50	Correct	226 ms	45032 KB	Output is correct