fork download
copy 
  1. #include <iostream>
  2. #include<unordered_set>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	int n,k;
  7. 	cin>>n>>k;
  8. 	unordered_set<int>temp;
  9. 	int arr[n];
  10. 	for(int i=0;i<n;i++)
  11. 	{
  12. 		cin>>arr[i];
  13. 		temp.insert(arr[i]);
  14. 	}
  15. 	int r=0;
  16. 	for(int i=0;i<n;i++)
  17. 	{
  18. 		int k1=k;
  19. 		while(k1>0)
  20. 		{
  21. 			if(temp.find(arr[i]-k1)!=temp.end())
  22. 		{
  23. 			r=r+1;
  24. 			//cout<<temp.find(arr[i]-1)<<"\n";
  25. 		}
  26. 		if(temp.find(arr[i]+k1)!=temp.end())
  27. 		{
  28. 			r=r+1;
  29. 			//cout<<temp.find(arr[i]-2)<<"\n";
  30. 		}
  31. 			k1--;
  32. 		}
  33. 	}
  34. 	int result=(r/2)+n;
  35.  
  36. 	cout<<result;
  37. 	return 0;
  38. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin
copy 
1 3 
2
stdout
copy 
1
https://ideone.com/mx3Wyf
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!