Submission #153828

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
153828	2019-09-16T15:33:52 Z	songc	None (JOI14_ho_t3)	C++14	100 / 100	399 ms	2936 KB

2014_ho_t3

#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<int,int> pii;

int N;
LL ans, S[101010], RS[101010];

bool chk(LL k){
	for (int i=1; i<N; i++){
		int l = N+1-(lower_bound(RS+N-i+1, RS+N+1, k+RS[N-i])-RS);
		int r = lower_bound(S+i+1, S+N+1, k+S[i])-S;
		if (l < 1 || N < r) continue;
		if (S[l-1] + S[N] - S[r] >= k) return true;
	}
	return false;
}

int main(){
	scanf("%d", &N);
	for (int i=1; i<=N; i++){
		scanf("%lld", &S[i]);
		RS[N-i+1] = S[i];
	}
	for (int i=1; i<=N; i++) S[i] += S[i-1], RS[i] += RS[i-1];
	LL L=0, R=(1ll<<60);
	while (L<=R){
		LL mid = (L+R)/2;
		if (chk(mid)) ans=mid, L=mid+1;
		else R = mid-1;
	}
	printf("%lld\n", ans);
	return 0;
}

Compilation message

2014_ho_t3.cpp: In function 'int main()':
2014_ho_t3.cpp:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
2014_ho_t3.cpp:22:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &S[i]);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	3 ms	504 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	400 KB	Output is correct
7	Correct	2 ms	360 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	252 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct

Subtask #2
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	3 ms	504 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	400 KB	Output is correct
7	Correct	2 ms	360 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	252 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	3 ms	376 KB	Output is correct
12	Correct	3 ms	256 KB	Output is correct
13	Correct	3 ms	376 KB	Output is correct
14	Correct	3 ms	376 KB	Output is correct
15	Correct	3 ms	376 KB	Output is correct
16	Correct	3 ms	256 KB	Output is correct
17	Correct	3 ms	256 KB	Output is correct
18	Correct	3 ms	376 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	3 ms	376 KB	Output is correct

Subtask #3
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	3 ms	504 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	400 KB	Output is correct
7	Correct	2 ms	360 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	252 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	3 ms	376 KB	Output is correct
12	Correct	3 ms	256 KB	Output is correct
13	Correct	3 ms	376 KB	Output is correct
14	Correct	3 ms	376 KB	Output is correct
15	Correct	3 ms	376 KB	Output is correct
16	Correct	3 ms	256 KB	Output is correct
17	Correct	3 ms	256 KB	Output is correct
18	Correct	3 ms	376 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	3 ms	376 KB	Output is correct
21	Correct	27 ms	504 KB	Output is correct
22	Correct	27 ms	504 KB	Output is correct
23	Correct	25 ms	504 KB	Output is correct
24	Correct	24 ms	504 KB	Output is correct
25	Correct	27 ms	504 KB	Output is correct
26	Correct	29 ms	636 KB	Output is correct
27	Correct	30 ms	504 KB	Output is correct
28	Correct	30 ms	504 KB	Output is correct
29	Correct	32 ms	504 KB	Output is correct
30	Correct	29 ms	504 KB	Output is correct
31	Correct	25 ms	536 KB	Output is correct
32	Correct	25 ms	504 KB	Output is correct
33	Correct	26 ms	504 KB	Output is correct
34	Correct	25 ms	504 KB	Output is correct
35	Correct	24 ms	504 KB	Output is correct

Subtask #4
50.0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	3 ms	504 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	400 KB	Output is correct
7	Correct	2 ms	360 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	252 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	3 ms	376 KB	Output is correct
12	Correct	3 ms	256 KB	Output is correct
13	Correct	3 ms	376 KB	Output is correct
14	Correct	3 ms	376 KB	Output is correct
15	Correct	3 ms	376 KB	Output is correct
16	Correct	3 ms	256 KB	Output is correct
17	Correct	3 ms	256 KB	Output is correct
18	Correct	3 ms	376 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	3 ms	376 KB	Output is correct
21	Correct	27 ms	504 KB	Output is correct
22	Correct	27 ms	504 KB	Output is correct
23	Correct	25 ms	504 KB	Output is correct
24	Correct	24 ms	504 KB	Output is correct
25	Correct	27 ms	504 KB	Output is correct
26	Correct	29 ms	636 KB	Output is correct
27	Correct	30 ms	504 KB	Output is correct
28	Correct	30 ms	504 KB	Output is correct
29	Correct	32 ms	504 KB	Output is correct
30	Correct	29 ms	504 KB	Output is correct
31	Correct	25 ms	536 KB	Output is correct
32	Correct	25 ms	504 KB	Output is correct
33	Correct	26 ms	504 KB	Output is correct
34	Correct	25 ms	504 KB	Output is correct
35	Correct	24 ms	504 KB	Output is correct
36	Correct	391 ms	2900 KB	Output is correct
37	Correct	392 ms	2900 KB	Output is correct
38	Correct	394 ms	2808 KB	Output is correct
39	Correct	384 ms	2936 KB	Output is correct
40	Correct	336 ms	2888 KB	Output is correct
41	Correct	388 ms	2936 KB	Output is correct
42	Correct	361 ms	2892 KB	Output is correct
43	Correct	378 ms	2812 KB	Output is correct
44	Correct	399 ms	2936 KB	Output is correct
45	Correct	346 ms	2812 KB	Output is correct
46	Correct	362 ms	2224 KB	Output is correct
47	Correct	378 ms	2168 KB	Output is correct
48	Correct	368 ms	2168 KB	Output is correct

Submission #153828

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