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  1. #include <iostream>
  2. #include <stdio.h>
  3. #include <algorithm>
  4.  
  5. using namespace std;
  6.  
  7. int main() {
  8. 	int n,k,cnt=0,i;
  9. 	scanf("%d%d",&n,&k);
  10. 	int arr[n];
  11. 	for(i=0;i<n;i++)
  12. 	{
  13. 		scanf("%d",&arr[i]);
  14. 	}
  15. 	sort(arr,arr+n);
  16. 	for(i=0;i<n;i++)
  17. 	{
  18. 		if(binary_search(arr+i+1,arr+n,arr[i]+k))
  19. 		{
  20. 			cnt++;
  21. 		}
  22.  
  23. 	}
  24. 	printf("%d",cnt);
  25. 	return 0;
  26. }
Success #stdin #stdout 0s 3144KB
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stdin
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5 2
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stdout
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3
https://ideone.com/mDTJlz
HACKRNDM SPOJ AC
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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