Submission #171628

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
171628	2019-12-29T12:24:25 Z	davitmarg	Bigger segments (IZhO19_segments)	C++17	100 / 100	139 ms	20968 KB

segments

/*DavitMarg*/
#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>
#include <cstring>
#include <map>
#include <unordered_map>
#include <set>
#include <queue>
#include <iomanip>
#include <bitset>
#include <stack>
#include <cassert>
#include <iterator>
#include <fstream>
#define mod 1000000007ll
#define LL long long
#define LD long double
#define MP make_pair
#define PB push_back
#define all(v) v.begin(), v.end()
using namespace std;

const int N = 500005;


int n;
LL a[N],pr[N];
pair<int, LL> dp[N];

int main()
{
	cin >> n;
	for (int i = 1; i <= n; i++)
		scanf("%lld", a + i);
	for (int i = 1; i <= n; i++)
	{
		dp[i] = MP(0, -mod * mod);
		pr[i] = pr[i - 1] + a[i];
	}
	for (int i = 0; i < n; i++)
	{
		dp[i + 1] = max(dp[i + 1], MP(dp[i].first, dp[i].second - a[i+1]));
		int l = i + 1, r = n, m, pos = 0;
		while (l <= r)
		{
			m = (l + r) / 2;
			if (pr[m] - pr[i] >= -dp[i].second)
			{
				r = m - 1;
				pos = m;
			}
			else
				l = m + 1;
		}
		dp[pos] = max(dp[pos], MP(dp[i].first + 1, pr[i] - pr[pos]));
		//cout << i << " = " << dp[i].first << " : " << -dp[i].second << endl;
		//cout << pos << endl << endl;
	}
	cout << dp[n].first << endl;
	return 0;
}

/*





*/

Compilation message

segments.cpp: In function 'int main()':
segments.cpp:37:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", a + i);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	0 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	380 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct

Subtask #2
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	0 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	380 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	380 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct

Subtask #3
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	0 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	380 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	380 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	504 KB	Output is correct
32	Correct	3 ms	504 KB	Output is correct
33	Correct	3 ms	504 KB	Output is correct
34	Correct	3 ms	376 KB	Output is correct
35	Correct	2 ms	504 KB	Output is correct
36	Correct	3 ms	504 KB	Output is correct
37	Correct	3 ms	376 KB	Output is correct
38	Correct	2 ms	376 KB	Output is correct
39	Correct	2 ms	376 KB	Output is correct
40	Correct	3 ms	504 KB	Output is correct
41	Correct	2 ms	504 KB	Output is correct
42	Correct	2 ms	376 KB	Output is correct
43	Correct	2 ms	376 KB	Output is correct
44	Correct	2 ms	376 KB	Output is correct
45	Correct	2 ms	376 KB	Output is correct

Subtask #4
36.0 / 36.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	0 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	380 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	380 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	504 KB	Output is correct
32	Correct	3 ms	504 KB	Output is correct
33	Correct	3 ms	504 KB	Output is correct
34	Correct	3 ms	376 KB	Output is correct
35	Correct	2 ms	504 KB	Output is correct
36	Correct	3 ms	504 KB	Output is correct
37	Correct	3 ms	376 KB	Output is correct
38	Correct	2 ms	376 KB	Output is correct
39	Correct	2 ms	376 KB	Output is correct
40	Correct	3 ms	504 KB	Output is correct
41	Correct	2 ms	504 KB	Output is correct
42	Correct	2 ms	376 KB	Output is correct
43	Correct	2 ms	376 KB	Output is correct
44	Correct	2 ms	376 KB	Output is correct
45	Correct	2 ms	376 KB	Output is correct
46	Correct	19 ms	3804 KB	Output is correct
47	Correct	22 ms	3916 KB	Output is correct
48	Correct	25 ms	4344 KB	Output is correct
49	Correct	25 ms	4344 KB	Output is correct
50	Correct	22 ms	4472 KB	Output is correct
51	Correct	31 ms	4472 KB	Output is correct
52	Correct	15 ms	2432 KB	Output is correct
53	Correct	10 ms	1528 KB	Output is correct
54	Correct	22 ms	3764 KB	Output is correct
55	Correct	25 ms	4476 KB	Output is correct
56	Correct	19 ms	3960 KB	Output is correct
57	Correct	20 ms	3960 KB	Output is correct
58	Correct	20 ms	3960 KB	Output is correct
59	Correct	20 ms	4088 KB	Output is correct
60	Correct	22 ms	4116 KB	Output is correct

Subtask #5
27.0 / 27.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	0 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	380 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	376 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	380 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	504 KB	Output is correct
32	Correct	3 ms	504 KB	Output is correct
33	Correct	3 ms	504 KB	Output is correct
34	Correct	3 ms	376 KB	Output is correct
35	Correct	2 ms	504 KB	Output is correct
36	Correct	3 ms	504 KB	Output is correct
37	Correct	3 ms	376 KB	Output is correct
38	Correct	2 ms	376 KB	Output is correct
39	Correct	2 ms	376 KB	Output is correct
40	Correct	3 ms	504 KB	Output is correct
41	Correct	2 ms	504 KB	Output is correct
42	Correct	2 ms	376 KB	Output is correct
43	Correct	2 ms	376 KB	Output is correct
44	Correct	2 ms	376 KB	Output is correct
45	Correct	2 ms	376 KB	Output is correct
46	Correct	19 ms	3804 KB	Output is correct
47	Correct	22 ms	3916 KB	Output is correct
48	Correct	25 ms	4344 KB	Output is correct
49	Correct	25 ms	4344 KB	Output is correct
50	Correct	22 ms	4472 KB	Output is correct
51	Correct	31 ms	4472 KB	Output is correct
52	Correct	15 ms	2432 KB	Output is correct
53	Correct	10 ms	1528 KB	Output is correct
54	Correct	22 ms	3764 KB	Output is correct
55	Correct	25 ms	4476 KB	Output is correct
56	Correct	19 ms	3960 KB	Output is correct
57	Correct	20 ms	3960 KB	Output is correct
58	Correct	20 ms	3960 KB	Output is correct
59	Correct	20 ms	4088 KB	Output is correct
60	Correct	22 ms	4116 KB	Output is correct
61	Correct	88 ms	18088 KB	Output is correct
62	Correct	95 ms	17912 KB	Output is correct
63	Correct	104 ms	18296 KB	Output is correct
64	Correct	126 ms	20596 KB	Output is correct
65	Correct	103 ms	20856 KB	Output is correct
66	Correct	139 ms	20968 KB	Output is correct
67	Correct	112 ms	16760 KB	Output is correct
68	Correct	56 ms	8696 KB	Output is correct
69	Correct	99 ms	17096 KB	Output is correct
70	Correct	116 ms	20856 KB	Output is correct
71	Correct	87 ms	17912 KB	Output is correct
72	Correct	96 ms	18296 KB	Output is correct
73	Correct	97 ms	18912 KB	Output is correct
74	Correct	98 ms	19420 KB	Output is correct
75	Correct	97 ms	19220 KB	Output is correct

Submission #171628

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 14.0 / 14.0

Subtask #3 10.0 / 10.0

Subtask #4 36.0 / 36.0

Subtask #5 27.0 / 27.0

Subtask #1
13.0 / 13.0

Subtask #2
14.0 / 14.0

Subtask #3
10.0 / 10.0

Subtask #4
36.0 / 36.0

Subtask #5
27.0 / 27.0