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Submission #367918

# Submission time Handle Problem Language Result Execution time Memory
367918 2021-02-18T20:11:23 Z ogibogi2004 Global Warming (CEOI18_glo) C++14
100 / 100
 1098 ms 50176 KB 
#include<bits/stdc++.h>
using namespace std;
const int MAXN=2e5+6;
const int MAXM=2e6+6;
set<int>s;
int n,x;
int a[MAXN];
int fen[MAXM];
void update(int idx,int val)
{
	idx++;
	for(;idx<MAXM;idx+=idx&(-idx))
	{
		fen[idx]=max(fen[idx],val);
	}
}
int query(int idx)
{
	idx++;
	int ret=0;
	for(;idx>0;idx-=idx&(-idx))
	{
		ret=max(ret,fen[idx]);
	}
	return ret;
}
map<int,int>mp;
int dpl[MAXN],dpr[MAXN];
int main()
{
	cin>>n>>x;
	for(int i=1;i<=n;i++)cin>>a[i];
	for(int i=1;i<=n;i++)
	{
		s.insert(a[i]);
		s.insert(a[i]-x);
	}
	int cnt=1;
	for(auto xd:s)
	{
		++cnt;
		mp[xd]=cnt;
	}
	for(int i=1;i<=n;i++)
	{
		int j=mp[a[i]];
		dpl[i]=query(j-1)+1;
		update(j,dpl[i]);
	}
	memset(fen,0,sizeof(fen));
	for(int i=n;i>=1;i--)
	{
		int j=mp[a[i]];
		dpr[i]=query(MAXM-j-1)+1;
		update(MAXM-j,dpr[i]);
	}
	memset(fen,0,sizeof(fen));
	int ans=0;
	for(int i=n;i>=1;i--)
	{
		int j=mp[a[i]-x];
		ans=max(ans,dpl[i]+query(MAXM-j-1));
		j=mp[a[i]];
		update(MAXM-j,dpr[i]);
	}
	cout<<ans<<endl;
return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8172 KB Output is correct
2 Correct 5 ms 8172 KB Output is correct
3 Correct 6 ms 8172 KB Output is correct
4 Correct 5 ms 8172 KB Output is correct
5 Correct 5 ms 8172 KB Output is correct
6 Correct 6 ms 8172 KB Output is correct
7 Correct 5 ms 8172 KB Output is correct
8 Correct 5 ms 8172 KB Output is correct
9 Correct 5 ms 8172 KB Output is correct
10 Correct 5 ms 8172 KB Output is correct
11 Correct 6 ms 8172 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8172 KB Output is correct
2 Correct 5 ms 8172 KB Output is correct
3 Correct 6 ms 8172 KB Output is correct
4 Correct 5 ms 8172 KB Output is correct
5 Correct 5 ms 8172 KB Output is correct
6 Correct 6 ms 8172 KB Output is correct
7 Correct 5 ms 8172 KB Output is correct
8 Correct 5 ms 8172 KB Output is correct
9 Correct 5 ms 8172 KB Output is correct
10 Correct 5 ms 8172 KB Output is correct
11 Correct 6 ms 8172 KB Output is correct
12 Correct 6 ms 8172 KB Output is correct
13 Correct 5 ms 8172 KB Output is correct
14 Correct 5 ms 8192 KB Output is correct
15 Correct 6 ms 8172 KB Output is correct
16 Correct 6 ms 8172 KB Output is correct
17 Correct 6 ms 8172 KB Output is correct
18 Correct 6 ms 8172 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8172 KB Output is correct
2 Correct 5 ms 8172 KB Output is correct
3 Correct 6 ms 8172 KB Output is correct
4 Correct 5 ms 8172 KB Output is correct
5 Correct 5 ms 8172 KB Output is correct
6 Correct 6 ms 8172 KB Output is correct
7 Correct 5 ms 8172 KB Output is correct
8 Correct 5 ms 8172 KB Output is correct
9 Correct 5 ms 8172 KB Output is correct
10 Correct 5 ms 8172 KB Output is correct
11 Correct 6 ms 8172 KB Output is correct
12 Correct 6 ms 8172 KB Output is correct
13 Correct 5 ms 8172 KB Output is correct
14 Correct 5 ms 8192 KB Output is correct
15 Correct 6 ms 8172 KB Output is correct
16 Correct 6 ms 8172 KB Output is correct
17 Correct 6 ms 8172 KB Output is correct
18 Correct 6 ms 8172 KB Output is correct
19 Correct 7 ms 8448 KB Output is correct
20 Correct 7 ms 8428 KB Output is correct
21 Correct 7 ms 8428 KB Output is correct
22 Correct 7 ms 8300 KB Output is correct
23 Correct 6 ms 8312 KB Output is correct
24 Correct 6 ms 8300 KB Output is correct
25 Correct 7 ms 8300 KB Output is correct
26 Correct 7 ms 8300 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 744 ms 31296 KB Output is correct
2 Correct 680 ms 31340 KB Output is correct
3 Correct 687 ms 31336 KB Output is correct
4 Correct 754 ms 31212 KB Output is correct
5 Correct 211 ms 21060 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 156 ms 18756 KB Output is correct
2 Correct 147 ms 18796 KB Output is correct
3 Correct 150 ms 18668 KB Output is correct
4 Correct 61 ms 13676 KB Output is correct
5 Correct 5 ms 8172 KB Output is correct
6 Correct 67 ms 13676 KB Output is correct
7 Correct 110 ms 17132 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 428 ms 29132 KB Output is correct
2 Correct 395 ms 29332 KB Output is correct
3 Correct 1098 ms 50176 KB Output is correct
4 Correct 276 ms 30444 KB Output is correct
5 Correct 189 ms 28652 KB Output is correct
6 Correct 360 ms 47212 KB Output is correct
7 Correct 394 ms 47980 KB Output is correct
8 Correct 266 ms 29036 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8172 KB Output is correct
2 Correct 5 ms 8172 KB Output is correct
3 Correct 6 ms 8172 KB Output is correct
4 Correct 5 ms 8172 KB Output is correct
5 Correct 5 ms 8172 KB Output is correct
6 Correct 6 ms 8172 KB Output is correct
7 Correct 5 ms 8172 KB Output is correct
8 Correct 5 ms 8172 KB Output is correct
9 Correct 5 ms 8172 KB Output is correct
10 Correct 5 ms 8172 KB Output is correct
11 Correct 6 ms 8172 KB Output is correct
12 Correct 6 ms 8172 KB Output is correct
13 Correct 5 ms 8172 KB Output is correct
14 Correct 5 ms 8192 KB Output is correct
15 Correct 6 ms 8172 KB Output is correct
16 Correct 6 ms 8172 KB Output is correct
17 Correct 6 ms 8172 KB Output is correct
18 Correct 6 ms 8172 KB Output is correct
19 Correct 7 ms 8448 KB Output is correct
20 Correct 7 ms 8428 KB Output is correct
21 Correct 7 ms 8428 KB Output is correct
22 Correct 7 ms 8300 KB Output is correct
23 Correct 6 ms 8312 KB Output is correct
24 Correct 6 ms 8300 KB Output is correct
25 Correct 7 ms 8300 KB Output is correct
26 Correct 7 ms 8300 KB Output is correct
27 Correct 744 ms 31296 KB Output is correct
28 Correct 680 ms 31340 KB Output is correct
29 Correct 687 ms 31336 KB Output is correct
30 Correct 754 ms 31212 KB Output is correct
31 Correct 211 ms 21060 KB Output is correct
32 Correct 156 ms 18756 KB Output is correct
33 Correct 147 ms 18796 KB Output is correct
34 Correct 150 ms 18668 KB Output is correct
35 Correct 61 ms 13676 KB Output is correct
36 Correct 5 ms 8172 KB Output is correct
37 Correct 67 ms 13676 KB Output is correct
38 Correct 110 ms 17132 KB Output is correct
39 Correct 428 ms 29132 KB Output is correct
40 Correct 395 ms 29332 KB Output is correct
41 Correct 1098 ms 50176 KB Output is correct
42 Correct 276 ms 30444 KB Output is correct
43 Correct 189 ms 28652 KB Output is correct
44 Correct 360 ms 47212 KB Output is correct
45 Correct 394 ms 47980 KB Output is correct
46 Correct 266 ms 29036 KB Output is correct
47 Correct 379 ms 29088 KB Output is correct
48 Correct 382 ms 29036 KB Output is correct
49 Correct 1026 ms 50156 KB Output is correct
50 Correct 253 ms 30584 KB Output is correct
51 Correct 213 ms 24812 KB Output is correct
52 Correct 299 ms 30700 KB Output is correct
53 Correct 388 ms 49388 KB Output is correct
54 Correct 417 ms 50156 KB Output is correct
55 Correct 611 ms 43884 KB Output is correct