답안 #198443

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
198443	2020-01-26T04:25:34 Z	dndhk	Hacker (BOI15_hac)	C++14	100 / 100	140 ms	12636 KB

hac

#include <bits/stdc++.h>

#define pb push_back

using namespace std;

const int MAX_N = 500000;

typedef pair<int, int> pii;

int N;
int arr[MAX_N+1], sum[MAX_N+1];
int c[MAX_N+1];

vector<pii> vt;

int main(){
	scanf("%d", &N);
	for(int i=1; i<=N; i++){
		scanf("%d", &arr[i]);
		sum[i] = sum[i-1] + arr[i];
	}
	for(int i=1; i<=N; i++){
		if(i+(N/2)-1<=N){
			c[i] = sum[i+(N/2)-1] - sum[i-1];
		}else{
			c[i] = sum[N] - sum[i-1] + sum[(i+(N/2)-1)%N];
		}
		vt.pb({c[i], i});
	}
	sort(vt.begin(), vt.end());
	int s = vt.back().second, e = (s+(N/2)-2)%N+1;
	vt.pop_back();
	while(!vt.empty()){
		int ns = vt.back().second, ne = (ns+(N/2)-2)%N+1;
		if(ns<=ne){
			if(s<=e){
				s = max(s, ns);
				e = min(e, ne);
				if(s>e)	break;
			}else{
				if(ne>=s){
					s = max(ns, s);
					e = ne;
					if(s>e)	break;
				}else{
					e = min(e, ne);
					s = ns;
					if(s>e)	break;
				}
			}
		}else{
			if(s<=e){
				if(ns<=e){
					s = max(ns, s);
					if(s>e)	break;
				}else{
					e = min(e, ne);
					if(s>e)	break;
				}
			}else{
				s = max(ns, s);
				e = min(ne, e);
			}
		}
		vt.pop_back();
	}
	printf("%d\n", sum[N] - vt.back().first);

}

Compilation message

hac.cpp: In function 'int main()':
hac.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
hac.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &arr[i]);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	380 KB	Output is correct
2	Correct	5 ms	376 KB	Output is correct
3	Correct	5 ms	376 KB	Output is correct
4	Correct	6 ms	376 KB	Output is correct
5	Correct	6 ms	376 KB	Output is correct
6	Correct	6 ms	376 KB	Output is correct
7	Correct	5 ms	248 KB	Output is correct
8	Correct	5 ms	376 KB	Output is correct
9	Correct	6 ms	376 KB	Output is correct
10	Correct	5 ms	376 KB	Output is correct
11	Correct	5 ms	376 KB	Output is correct
12	Correct	5 ms	376 KB	Output is correct
13	Correct	5 ms	376 KB	Output is correct
14	Correct	5 ms	376 KB	Output is correct
15	Correct	5 ms	376 KB	Output is correct
16	Correct	5 ms	376 KB	Output is correct
17	Correct	6 ms	380 KB	Output is correct
18	Correct	5 ms	376 KB	Output is correct

Subtask #2

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	380 KB	Output is correct
2	Correct	5 ms	376 KB	Output is correct
3	Correct	5 ms	376 KB	Output is correct
4	Correct	6 ms	376 KB	Output is correct
5	Correct	6 ms	376 KB	Output is correct
6	Correct	6 ms	376 KB	Output is correct
7	Correct	5 ms	248 KB	Output is correct
8	Correct	5 ms	376 KB	Output is correct
9	Correct	6 ms	376 KB	Output is correct
10	Correct	5 ms	376 KB	Output is correct
11	Correct	5 ms	376 KB	Output is correct
12	Correct	5 ms	376 KB	Output is correct
13	Correct	5 ms	376 KB	Output is correct
14	Correct	5 ms	376 KB	Output is correct
15	Correct	5 ms	376 KB	Output is correct
16	Correct	5 ms	376 KB	Output is correct
17	Correct	6 ms	380 KB	Output is correct
18	Correct	5 ms	376 KB	Output is correct
19	Correct	5 ms	376 KB	Output is correct
20	Correct	6 ms	376 KB	Output is correct
21	Correct	5 ms	376 KB	Output is correct
22	Correct	6 ms	376 KB	Output is correct
23	Correct	6 ms	508 KB	Output is correct
24	Correct	6 ms	376 KB	Output is correct
25	Correct	8 ms	504 KB	Output is correct
26	Correct	7 ms	504 KB	Output is correct
27	Correct	5 ms	376 KB	Output is correct
28	Correct	5 ms	376 KB	Output is correct
29	Correct	6 ms	376 KB	Output is correct
30	Correct	6 ms	504 KB	Output is correct
31	Correct	6 ms	504 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	504 KB	Output is correct
2	Correct	5 ms	376 KB	Output is correct
3	Correct	7 ms	504 KB	Output is correct
4	Correct	25 ms	2800 KB	Output is correct
5	Correct	55 ms	5356 KB	Output is correct
6	Correct	69 ms	6500 KB	Output is correct
7	Correct	83 ms	9392 KB	Output is correct
8	Correct	135 ms	12508 KB	Output is correct

Subtask #4

40.0 / 40.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	380 KB	Output is correct
2	Correct	5 ms	376 KB	Output is correct
3	Correct	5 ms	376 KB	Output is correct
4	Correct	6 ms	376 KB	Output is correct
5	Correct	6 ms	376 KB	Output is correct
6	Correct	6 ms	376 KB	Output is correct
7	Correct	5 ms	248 KB	Output is correct
8	Correct	5 ms	376 KB	Output is correct
9	Correct	6 ms	376 KB	Output is correct
10	Correct	5 ms	376 KB	Output is correct
11	Correct	5 ms	376 KB	Output is correct
12	Correct	5 ms	376 KB	Output is correct
13	Correct	5 ms	376 KB	Output is correct
14	Correct	5 ms	376 KB	Output is correct
15	Correct	5 ms	376 KB	Output is correct
16	Correct	5 ms	376 KB	Output is correct
17	Correct	6 ms	380 KB	Output is correct
18	Correct	5 ms	376 KB	Output is correct
19	Correct	5 ms	376 KB	Output is correct
20	Correct	6 ms	376 KB	Output is correct
21	Correct	5 ms	376 KB	Output is correct
22	Correct	6 ms	376 KB	Output is correct
23	Correct	6 ms	508 KB	Output is correct
24	Correct	6 ms	376 KB	Output is correct
25	Correct	8 ms	504 KB	Output is correct
26	Correct	7 ms	504 KB	Output is correct
27	Correct	5 ms	376 KB	Output is correct
28	Correct	5 ms	376 KB	Output is correct
29	Correct	6 ms	376 KB	Output is correct
30	Correct	6 ms	504 KB	Output is correct
31	Correct	6 ms	504 KB	Output is correct
32	Correct	5 ms	504 KB	Output is correct
33	Correct	5 ms	376 KB	Output is correct
34	Correct	7 ms	504 KB	Output is correct
35	Correct	25 ms	2800 KB	Output is correct
36	Correct	55 ms	5356 KB	Output is correct
37	Correct	69 ms	6500 KB	Output is correct
38	Correct	83 ms	9392 KB	Output is correct
39	Correct	135 ms	12508 KB	Output is correct
40	Correct	9 ms	1016 KB	Output is correct
41	Correct	11 ms	1016 KB	Output is correct
42	Correct	12 ms	1144 KB	Output is correct
43	Correct	64 ms	5484 KB	Output is correct
44	Correct	133 ms	12380 KB	Output is correct
45	Correct	29 ms	2928 KB	Output is correct
46	Correct	77 ms	9316 KB	Output is correct
47	Correct	132 ms	12440 KB	Output is correct
48	Correct	97 ms	12636 KB	Output is correct
49	Correct	140 ms	11996 KB	Output is correct
50	Correct	138 ms	11872 KB	Output is correct