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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 		int n,k;
  6. 		scanf("%d %d",&n, &k);
  7. 		int a[n];
  8.  
  9. 		for(int i=0;i<n;i++){
  10. 			scanf("%d", &a[i]);
  11. 		}
  12.  
  13. 		int c=0;
  14. 		sort(a,a+n);
  15. 		for(int i=0;i<n;i++){
  16. 			for(int j =i+1;j<n;j++){
  17. 				if(a[j]-a[i] == k){
  18. 					c++;
  19. 				}
  20. 				if(a[j]-a[i] > k){
  21. 					break;
  22. 				}
  23. 			}
  24. 		}
  25.  
  26. 		printf("%d\n",c);
  27.  
  28. 	return 0;
  29. }
Success #stdin #stdout 0s 16064KB
comments (?)
stdin
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7 3
5 3 7 1 2 2 4
stdout
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4
https://ideone.com/gskGLc
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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