Submission #906429

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
906429	2024-01-14T09:12:58 Z	Nonoze	Global Warming (CEOI18_glo)	C++17	100 / 100	46 ms	6620 KB

#include <bits/stdc++.h>
using namespace std;
#define int long long

int n, x;
vector<int> t;

int bs(int val, vector<int> &LIS) {
	int l=0, r=LIS.size()-1;
	int ans=-1;
	while (l<=r) {
		int mid=l+(r-l)/2;
		if (LIS[mid]>val) {
			l=mid+1;
			ans=mid+1;
		} else {
			r=mid-1;
		}
	}
	return ans;
}

void solve() {
	cin >> n >> x;
	t.resize(n);
	for (auto &u: t) cin >> u;
	vector<int> corr(n, 0);
	vector<int> LIS;
	for (int i=n-1; i>=0; i--) {
		corr[i]=max(0LL, bs(t[i]-x, LIS));
		int lb=bs(t[i], LIS);
		if (lb>=(int)LIS.size() || i==n-1) {
			LIS.push_back(t[i]);
		} else if (lb==-1) {
			LIS[0]=t[i];
		} else {
			LIS[lb]=t[i];
		}
	}


	
	int ans=1;
	LIS.clear();
	for (int i=0; i<n; i++) {
		auto lb=lower_bound(LIS.begin(), LIS.end(), t[i]);
		if (lb==LIS.end()) {
			LIS.push_back(t[i]);
			ans=max(ans, (int)LIS.size()+corr[i]);
		} else {
			LIS[lb-LIS.begin()]=t[i];
			ans=max(ans, (int)(lb-LIS.begin()+1)+corr[i]);
		}
	}
	cout << ans << endl;
	return;
}

signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	solve();
	return 0;
}

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	600 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	600 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 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	1 ms	348 KB	Output is correct

Subtask #3
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	600 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 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	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 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	45 ms	5336 KB	Output is correct
2	Correct	45 ms	5468 KB	Output is correct
3	Correct	46 ms	5532 KB	Output is correct
4	Correct	46 ms	5524 KB	Output is correct
5	Correct	25 ms	5860 KB	Output is correct

Subtask #5
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	1628 KB	Output is correct
2	Correct	12 ms	1628 KB	Output is correct
3	Correct	11 ms	1628 KB	Output is correct
4	Correct	6 ms	1868 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	6 ms	1912 KB	Output is correct
7	Correct	9 ms	1752 KB	Output is correct

Subtask #6
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	19 ms	2772 KB	Output is correct
2	Correct	19 ms	2908 KB	Output is correct
3	Correct	39 ms	5468 KB	Output is correct
4	Correct	23 ms	5844 KB	Output is correct
5	Correct	12 ms	3040 KB	Output is correct
6	Correct	21 ms	5588 KB	Output is correct
7	Correct	25 ms	6276 KB	Output is correct
8	Correct	16 ms	2908 KB	Output is correct

Subtask #7
25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	600 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 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	1 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	45 ms	5336 KB	Output is correct
28	Correct	45 ms	5468 KB	Output is correct
29	Correct	46 ms	5532 KB	Output is correct
30	Correct	46 ms	5524 KB	Output is correct
31	Correct	25 ms	5860 KB	Output is correct
32	Correct	11 ms	1628 KB	Output is correct
33	Correct	12 ms	1628 KB	Output is correct
34	Correct	11 ms	1628 KB	Output is correct
35	Correct	6 ms	1868 KB	Output is correct
36	Correct	1 ms	348 KB	Output is correct
37	Correct	6 ms	1912 KB	Output is correct
38	Correct	9 ms	1752 KB	Output is correct
39	Correct	19 ms	2772 KB	Output is correct
40	Correct	19 ms	2908 KB	Output is correct
41	Correct	39 ms	5468 KB	Output is correct
42	Correct	23 ms	5844 KB	Output is correct
43	Correct	12 ms	3040 KB	Output is correct
44	Correct	21 ms	5588 KB	Output is correct
45	Correct	25 ms	6276 KB	Output is correct
46	Correct	16 ms	2908 KB	Output is correct
47	Correct	22 ms	3024 KB	Output is correct
48	Correct	23 ms	3032 KB	Output is correct
49	Correct	45 ms	5336 KB	Output is correct
50	Correct	23 ms	5844 KB	Output is correct
51	Correct	22 ms	4828 KB	Output is correct
52	Correct	24 ms	5800 KB	Output is correct
53	Correct	20 ms	5852 KB	Output is correct
54	Correct	25 ms	6620 KB	Output is correct
55	Correct	36 ms	5468 KB	Output is correct

Submission #906429

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