Submission #927280

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
927280	2024-02-14T15:15:21 Z	belgianbot	Global Warming (CEOI18_glo)	C++14	100 / 100	54 ms	5460 KB

#include <bits/stdc++.h>

using namespace std;

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	int N, X; cin >> N >> X;
	
	vector <int> a (N);
	for (int i(0); i < N; i++)
		cin >> a[i];
	
	vector <int> pre(N), dp(N, INT_MAX);
	for (int i(0); i < N; i++) {
		auto it = lower_bound(dp.begin(), dp.end(), a[i] + X);
		int index = distance(dp.begin(), it);
		pre[i] = index;
		
		it = lower_bound(dp.begin(), dp.end(), a[i]);
		*it = a[i];
	}
	int ans(0);
	vector <int> suf(N, 0);
	for (int i(N - 1); i >= 0; i--) {
		int l(0), r(N - i), pos;
		while (l <= r) {
			int mid = l + (r - l) / 2;
			if (suf[mid] > a[i]) l = mid + 1;
			else {
				pos = mid;
				r = mid - 1;
			}
		}
		suf[pos] = a[i];
		ans = max(ans, pre[i] + pos + 1);
	}
	
	cout << ans << '\n';
		
	return 0;
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:36:25: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |   ans = max(ans, pre[i] + pos + 1);

Subtask #1
5.0 / 5.0

#	Verdict	Memory	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	344 KB	Output is correct
7	Correct	344 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct
11	Correct	348 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	344 KB	Output is correct

Subtask #3
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	344 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 ms	460 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	456 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct

Subtask #4
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	49 ms	5248 KB	Output is correct
2	Correct	49 ms	5460 KB	Output is correct
3	Correct	49 ms	5460 KB	Output is correct
4	Correct	54 ms	5452 KB	Output is correct
5	Correct	28 ms	4696 KB	Output is correct

Subtask #5
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	12 ms	1740 KB	Output is correct
2	Correct	11 ms	1540 KB	Output is correct
3	Correct	12 ms	1628 KB	Output is correct
4	Correct	10 ms	1468 KB	Output is correct
5	Correct	0 ms	600 KB	Output is correct
6	Correct	8 ms	1376 KB	Output is correct
7	Correct	9 ms	1628 KB	Output is correct

Subtask #6
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	22 ms	2908 KB	Output is correct
2	Correct	21 ms	2908 KB	Output is correct
3	Correct	43 ms	5460 KB	Output is correct
4	Correct	35 ms	4728 KB	Output is correct
5	Correct	15 ms	2396 KB	Output is correct
6	Correct	29 ms	4444 KB	Output is correct
7	Correct	29 ms	5212 KB	Output is correct
8	Correct	18 ms	2764 KB	Output is correct

Subtask #7
25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	344 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 ms	460 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	456 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	49 ms	5248 KB	Output is correct
28	Correct	49 ms	5460 KB	Output is correct
29	Correct	49 ms	5460 KB	Output is correct
30	Correct	54 ms	5452 KB	Output is correct
31	Correct	28 ms	4696 KB	Output is correct
32	Correct	12 ms	1740 KB	Output is correct
33	Correct	11 ms	1540 KB	Output is correct
34	Correct	12 ms	1628 KB	Output is correct
35	Correct	10 ms	1468 KB	Output is correct
36	Correct	0 ms	600 KB	Output is correct
37	Correct	8 ms	1376 KB	Output is correct
38	Correct	9 ms	1628 KB	Output is correct
39	Correct	22 ms	2908 KB	Output is correct
40	Correct	21 ms	2908 KB	Output is correct
41	Correct	43 ms	5460 KB	Output is correct
42	Correct	35 ms	4728 KB	Output is correct
43	Correct	15 ms	2396 KB	Output is correct
44	Correct	29 ms	4444 KB	Output is correct
45	Correct	29 ms	5212 KB	Output is correct
46	Correct	18 ms	2764 KB	Output is correct
47	Correct	26 ms	2864 KB	Output is correct
48	Correct	23 ms	2908 KB	Output is correct
49	Correct	49 ms	5248 KB	Output is correct
50	Correct	31 ms	4560 KB	Output is correct
51	Correct	25 ms	3676 KB	Output is correct
52	Correct	30 ms	4692 KB	Output is correct
53	Correct	31 ms	4804 KB	Output is correct
54	Correct	30 ms	5456 KB	Output is correct
55	Correct	39 ms	5460 KB	Output is correct

Submission #927280

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 13.0 / 13.0

Subtask #4 10.0 / 10.0

Subtask #5 20.0 / 20.0

Subtask #6 17.0 / 17.0

Subtask #7 25.0 / 25.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
13.0 / 13.0

Subtask #4
10.0 / 10.0

Subtask #5
20.0 / 20.0

Subtask #6
17.0 / 17.0

Subtask #7
25.0 / 25.0