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Submission #920119

# Submission time Handle Problem Language Result Execution time Memory
920119 2024-02-02T04:55:29 Z Faisal_Saqib Global Warming (CEOI18_glo) C++17
100 / 100
 94 ms 6800 KB 
#include <iostream>
#include <vector>
#include <map>
#include <algorithm>
using namespace std;
const int N=2e5+100;
int cpy[N],n,x;
long long dp[N];
int val[N];
pair<int,int> revert[N];
void GTA6()
{
	for(int i=0;i<=n;i++)
	{
		val[i]=-3e9;
		dp[i]=3e9;
	}
	val[0]=3e9;
	dp[0]=-3e9;
	for(int i=n-1;i>=0;i--)
	{
		cpy[i]=-cpy[i];
		int xc=lower_bound(dp,dp+n+1,cpy[i])-dp;
		revert[i]={xc,val[xc]};
		val[xc]=max(-cpy[i],val[xc]);
		dp[xc]=cpy[i];
		cpy[i]=-cpy[i];
	}
}
int main()
{
	cin>>n>>x;
	for(int i=0;i<n;i++)
		cin>>cpy[i];
	int ans=0;
	int final=0;
	GTA6();
	for(int i=0;i<=n;i++)
		dp[i]=3e9;
	dp[0]=-3e9;
	for(int i=0;i<n;i++)
	{
		cpy[i]-=x;
		int xc=lower_bound(dp,dp+n+1,cpy[i])-dp;
		dp[xc]=cpy[i];
		val[revert[i].first]=revert[i].second;
		int s=0;
		int e=n+1;
		while(s+1<e)
		{
			int mid=(s+e)/2;
			if(val[mid]>(cpy[i]))
				s=mid;
			else
				e=mid;
		}
		final=max(final,xc+s);
	}
	cout<<final<<'\n';
	return 0;
}

Compilation message

glo.cpp: In function 'void GTA6()':
glo.cpp:15:10: warning: overflow in conversion from 'double' to 'int' changes value from '-3.0e+9' to '-2147483648' [-Woverflow]
   15 |   val[i]=-3e9;
      |          ^~~~
glo.cpp:18:9: warning: overflow in conversion from 'double' to 'int' changes value from '3.0e+9' to '2147483647' [-Woverflow]
   18 |  val[0]=3e9;
      |         ^~~
glo.cpp: In function 'int main()':
glo.cpp:35:6: warning: unused variable 'ans' [-Wunused-variable]
   35 |  int ans=0;
      |      ^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4440 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 1 ms 4440 KB Output is correct
8 Correct 1 ms 4648 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4440 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 1 ms 4440 KB Output is correct
8 Correct 1 ms 4648 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4440 KB Output is correct
13 Correct 1 ms 4596 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4440 KB Output is correct
16 Correct 1 ms 4440 KB Output is correct
17 Correct 1 ms 4440 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4440 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 1 ms 4440 KB Output is correct
8 Correct 1 ms 4648 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4440 KB Output is correct
13 Correct 1 ms 4596 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4440 KB Output is correct
16 Correct 1 ms 4440 KB Output is correct
17 Correct 1 ms 4440 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 2 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4440 KB Output is correct
23 Correct 2 ms 4440 KB Output is correct
24 Correct 1 ms 4440 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4440 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 5040 KB Output is correct
2 Correct 88 ms 4948 KB Output is correct
3 Correct 91 ms 5004 KB Output is correct
4 Correct 94 ms 5112 KB Output is correct
5 Correct 64 ms 4944 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 4696 KB Output is correct
2 Correct 23 ms 4952 KB Output is correct
3 Correct 22 ms 5212 KB Output is correct
4 Correct 17 ms 4952 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 17 ms 4952 KB Output is correct
7 Correct 20 ms 5208 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 4688 KB Output is correct
2 Correct 41 ms 5456 KB Output is correct
3 Correct 81 ms 6800 KB Output is correct
4 Correct 67 ms 6056 KB Output is correct
5 Correct 33 ms 5200 KB Output is correct
6 Correct 64 ms 6460 KB Output is correct
7 Correct 73 ms 6736 KB Output is correct
8 Correct 40 ms 5540 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4440 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 1 ms 4440 KB Output is correct
8 Correct 1 ms 4648 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4440 KB Output is correct
13 Correct 1 ms 4596 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4440 KB Output is correct
16 Correct 1 ms 4440 KB Output is correct
17 Correct 1 ms 4440 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 2 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4440 KB Output is correct
23 Correct 2 ms 4440 KB Output is correct
24 Correct 1 ms 4440 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4440 KB Output is correct
27 Correct 90 ms 5040 KB Output is correct
28 Correct 88 ms 4948 KB Output is correct
29 Correct 91 ms 5004 KB Output is correct
30 Correct 94 ms 5112 KB Output is correct
31 Correct 64 ms 4944 KB Output is correct
32 Correct 22 ms 4696 KB Output is correct
33 Correct 23 ms 4952 KB Output is correct
34 Correct 22 ms 5212 KB Output is correct
35 Correct 17 ms 4952 KB Output is correct
36 Correct 1 ms 4700 KB Output is correct
37 Correct 17 ms 4952 KB Output is correct
38 Correct 20 ms 5208 KB Output is correct
39 Correct 41 ms 4688 KB Output is correct
40 Correct 41 ms 5456 KB Output is correct
41 Correct 81 ms 6800 KB Output is correct
42 Correct 67 ms 6056 KB Output is correct
43 Correct 33 ms 5200 KB Output is correct
44 Correct 64 ms 6460 KB Output is correct
45 Correct 73 ms 6736 KB Output is correct
46 Correct 40 ms 5540 KB Output is correct
47 Correct 44 ms 5456 KB Output is correct
48 Correct 44 ms 5456 KB Output is correct
49 Correct 89 ms 6740 KB Output is correct
50 Correct 67 ms 6084 KB Output is correct
51 Correct 49 ms 5716 KB Output is correct
52 Correct 66 ms 6136 KB Output is correct
53 Correct 62 ms 6232 KB Output is correct
54 Correct 79 ms 6736 KB Output is correct
55 Correct 83 ms 6712 KB Output is correct