답안 #51759 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
51759	2018-06-21T03:29:45 Z	model_code	도넛 (JOI14_ho_t3)	C++17	100 / 100	314 ms	3836 KB

2014_ho_t3

// O(N log^2 N) solution
#include<cstdio>
#include<algorithm>
using namespace std;

const int MAXN = 1000010;
typedef long long i64;

int N;
i64 A[MAXN];
i64 S[MAXN*4];

int find_next(int pos, i64 C)
{
	return upper_bound(S, S+(N*3), S[pos]+C-1) - S;
}

bool check(i64 C)
{
	for(int i=0;i<N;i++){
		int pos = i;
		pos = find_next(pos, C); if(pos > i+N) continue;
		pos = find_next(pos, C); if(pos > i+N) continue;
		pos = find_next(pos, C); if(pos > i+N) continue;
		return true;
	}

	return false;
}

int main()
{
	scanf("%d", &N);
	for(int i=1;i<=N;i++) scanf("%lld", A+i);
	S[0] = 0;
	for(int i=1;i<=N;i++) S[i] = S[i+N] = S[i+2*N] = A[i];
	for(int i=1;i<=3*N;i++) S[i] += S[i-1];

	i64 left=1, right=S[N]/3;
	while(left < right){
		i64 mid = (left+right+1)/2;

		if(check(mid)){
			left = mid;
		}else{
			right = mid-1;
		}
	}

	printf("%lld\n", left);

	return 0;
}

Compilation message

2014_ho_t3.cpp: In function 'int main()':
2014_ho_t3.cpp:33:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
2014_ho_t3.cpp:34:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=N;i++) scanf("%lld", A+i);
                        ~~~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	468 KB	Output is correct
8	Correct	3 ms	468 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	2 ms	544 KB	Output is correct

Subtask #2
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	468 KB	Output is correct
8	Correct	3 ms	468 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	2 ms	544 KB	Output is correct
11	Correct	2 ms	544 KB	Output is correct
12	Correct	2 ms	620 KB	Output is correct
13	Correct	2 ms	620 KB	Output is correct
14	Correct	2 ms	620 KB	Output is correct
15	Correct	2 ms	620 KB	Output is correct
16	Correct	3 ms	620 KB	Output is correct
17	Correct	3 ms	620 KB	Output is correct
18	Correct	3 ms	620 KB	Output is correct
19	Correct	3 ms	636 KB	Output is correct
20	Correct	2 ms	636 KB	Output is correct

Subtask #3
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	468 KB	Output is correct
8	Correct	3 ms	468 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	2 ms	544 KB	Output is correct
11	Correct	2 ms	544 KB	Output is correct
12	Correct	2 ms	620 KB	Output is correct
13	Correct	2 ms	620 KB	Output is correct
14	Correct	2 ms	620 KB	Output is correct
15	Correct	2 ms	620 KB	Output is correct
16	Correct	3 ms	620 KB	Output is correct
17	Correct	3 ms	620 KB	Output is correct
18	Correct	3 ms	620 KB	Output is correct
19	Correct	3 ms	636 KB	Output is correct
20	Correct	2 ms	636 KB	Output is correct
21	Correct	10 ms	764 KB	Output is correct
22	Correct	8 ms	860 KB	Output is correct
23	Correct	9 ms	860 KB	Output is correct
24	Correct	8 ms	860 KB	Output is correct
25	Correct	9 ms	860 KB	Output is correct
26	Correct	21 ms	860 KB	Output is correct
27	Correct	24 ms	860 KB	Output is correct
28	Correct	22 ms	860 KB	Output is correct
29	Correct	23 ms	860 KB	Output is correct
30	Correct	23 ms	860 KB	Output is correct
31	Correct	15 ms	860 KB	Output is correct
32	Correct	16 ms	860 KB	Output is correct
33	Correct	16 ms	860 KB	Output is correct
34	Correct	16 ms	860 KB	Output is correct
35	Correct	14 ms	860 KB	Output is correct

Subtask #4
50.0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	468 KB	Output is correct
8	Correct	3 ms	468 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	2 ms	544 KB	Output is correct
11	Correct	2 ms	544 KB	Output is correct
12	Correct	2 ms	620 KB	Output is correct
13	Correct	2 ms	620 KB	Output is correct
14	Correct	2 ms	620 KB	Output is correct
15	Correct	2 ms	620 KB	Output is correct
16	Correct	3 ms	620 KB	Output is correct
17	Correct	3 ms	620 KB	Output is correct
18	Correct	3 ms	620 KB	Output is correct
19	Correct	3 ms	636 KB	Output is correct
20	Correct	2 ms	636 KB	Output is correct
21	Correct	10 ms	764 KB	Output is correct
22	Correct	8 ms	860 KB	Output is correct
23	Correct	9 ms	860 KB	Output is correct
24	Correct	8 ms	860 KB	Output is correct
25	Correct	9 ms	860 KB	Output is correct
26	Correct	21 ms	860 KB	Output is correct
27	Correct	24 ms	860 KB	Output is correct
28	Correct	22 ms	860 KB	Output is correct
29	Correct	23 ms	860 KB	Output is correct
30	Correct	23 ms	860 KB	Output is correct
31	Correct	15 ms	860 KB	Output is correct
32	Correct	16 ms	860 KB	Output is correct
33	Correct	16 ms	860 KB	Output is correct
34	Correct	16 ms	860 KB	Output is correct
35	Correct	14 ms	860 KB	Output is correct
36	Correct	279 ms	3748 KB	Output is correct
37	Correct	288 ms	3752 KB	Output is correct
38	Correct	265 ms	3752 KB	Output is correct
39	Correct	172 ms	3836 KB	Output is correct
40	Correct	245 ms	3836 KB	Output is correct
41	Correct	314 ms	3836 KB	Output is correct
42	Correct	292 ms	3836 KB	Output is correct
43	Correct	271 ms	3836 KB	Output is correct
44	Correct	259 ms	3836 KB	Output is correct
45	Correct	217 ms	3836 KB	Output is correct
46	Correct	198 ms	3836 KB	Output is correct
47	Correct	220 ms	3836 KB	Output is correct
48	Correct	180 ms	3836 KB	Output is correct

답안 #51759

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 15.0 / 15.0

Subtask #3 30.0 / 30.0

Subtask #4 50.0 / 50.0

Subtask #1
5.0 / 5.0

Subtask #2
15.0 / 15.0

Subtask #3
30.0 / 30.0

Subtask #4
50.0 / 50.0