Submission #259934

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
259934	2020-08-08T20:18:15 Z	Kenzo_1114	Global Warming (CEOI18_glo)	C++17	100 / 100	83 ms	5152 KB

glo

#include<bits/stdc++.h>
using namespace std;
const int MAXN = 200010;
const long long int INF = 2e10 + 9;
 
int n;
long long int x, t[MAXN], dp[MAXN], ans[MAXN];
 
int main ()
{
	scanf("%d %lld", &n, &x);
 
	dp[0] = INF;
	for(int i = 1; i <= n; i++)	
		scanf("%lld", &t[i]), dp[i] = INF;

	long long int ANS = 0;
	for(int i = 1; i <= n; i++)
	{
		int it = lower_bound(dp, dp + n, t[i]) - dp;
		dp[it] = t[i];
		ans[i] = it + 1;
		ANS = max(ANS, ans[i]);
	}
 
	dp[0] = INF;
	for(int i = 1; i <= n; i++)	t[i] = -t[i], dp[i] = INF;
 
	for(int i = n; i > 0; i--)
	{
		int id = lower_bound(dp, dp + n, t[i] + x) - dp;
		int it = lower_bound(dp, dp + n, t[i]) - dp;
		dp[it] = t[i];
		ANS = max(ANS, id + ans[i]);
	}	
 
	printf("%lld\n", ANS);
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %lld", &n, &x);
  ~~~~~^~~~~~~~~~~~~~~~~~~
glo.cpp:15:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &t[i]), dp[i] = INF;
   ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~

Subtask #1

5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	0 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct

Subtask #3

13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	0 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	384 KB	Output is correct
24	Correct	1 ms	384 KB	Output is correct
25	Correct	1 ms	384 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct

Subtask #4

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	82 ms	4984 KB	Output is correct
2	Correct	81 ms	4984 KB	Output is correct
3	Correct	81 ms	5068 KB	Output is correct
4	Correct	83 ms	4984 KB	Output is correct
5	Correct	63 ms	5152 KB	Output is correct

Subtask #5

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	22 ms	1536 KB	Output is correct
2	Correct	25 ms	1536 KB	Output is correct
3	Correct	19 ms	1536 KB	Output is correct
4	Correct	16 ms	1536 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	15 ms	1536 KB	Output is correct
7	Correct	16 ms	1536 KB	Output is correct

Subtask #6

17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	36 ms	2680 KB	Output is correct
2	Correct	36 ms	2680 KB	Output is correct
3	Correct	75 ms	4984 KB	Output is correct
4	Correct	61 ms	4948 KB	Output is correct
5	Correct	31 ms	2688 KB	Output is correct
6	Correct	52 ms	4728 KB	Output is correct
7	Correct	63 ms	4728 KB	Output is correct
8	Correct	32 ms	2688 KB	Output is correct

Subtask #7

25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	0 ms	384 KB	Output is correct
17	Correct	0 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	1 ms	384 KB	Output is correct
23	Correct	1 ms	384 KB	Output is correct
24	Correct	1 ms	384 KB	Output is correct
25	Correct	1 ms	384 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	82 ms	4984 KB	Output is correct
28	Correct	81 ms	4984 KB	Output is correct
29	Correct	81 ms	5068 KB	Output is correct
30	Correct	83 ms	4984 KB	Output is correct
31	Correct	63 ms	5152 KB	Output is correct
32	Correct	22 ms	1536 KB	Output is correct
33	Correct	25 ms	1536 KB	Output is correct
34	Correct	19 ms	1536 KB	Output is correct
35	Correct	16 ms	1536 KB	Output is correct
36	Correct	1 ms	384 KB	Output is correct
37	Correct	15 ms	1536 KB	Output is correct
38	Correct	16 ms	1536 KB	Output is correct
39	Correct	36 ms	2680 KB	Output is correct
40	Correct	36 ms	2680 KB	Output is correct
41	Correct	75 ms	4984 KB	Output is correct
42	Correct	61 ms	4948 KB	Output is correct
43	Correct	31 ms	2688 KB	Output is correct
44	Correct	52 ms	4728 KB	Output is correct
45	Correct	63 ms	4728 KB	Output is correct
46	Correct	32 ms	2688 KB	Output is correct
47	Correct	40 ms	2808 KB	Output is correct
48	Correct	40 ms	2680 KB	Output is correct
49	Correct	83 ms	5060 KB	Output is correct
50	Correct	61 ms	4984 KB	Output is correct
51	Correct	50 ms	3832 KB	Output is correct
52	Correct	63 ms	4984 KB	Output is correct
53	Correct	54 ms	4984 KB	Output is correct
54	Correct	59 ms	4984 KB	Output is correct
55	Correct	67 ms	4984 KB	Output is correct