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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4.  
  5.  
  6. main(){
  7. 	int n , m; cin >> n ;
  8. 	int arr[n] ;
  9. 	for (int i =0 ; i < n ; i++)cin >> arr[i] ;
  10. 	sort (arr, arr+n) ;
  11. 	cin >> m ;
  12. 	while (m--){
  13. 			int l  , r ; cin >> l >> r ;
  14.  
  15. 		int left =-1 , right = n  ;
  16.  
  17. 		while (left + 1 < right)
  18. 		{
  19. 			int mid = (left + right ) /2 ;
  20.  
  21. 			if (arr[mid] >= l ) right = mid  ;
  22. 			else left = mid  ;
  23.  
  24. 		 }
  25.  
  26.  
  27. 		 int st = right ;
  28.  
  29. 		 left =0 , right = n  ;
  30.  
  31. 		while (left + 1 < right)
  32. 		{
  33. 			int mid = (left + right ) /2 ;
  34.  
  35. 			if (arr[mid] <= r ) left  = mid  ;
  36. 			else right  = mid  ;
  37.  
  38. 		 }
  39.  
  40.         if (l<0 && r < 0 ) cout << left - st ;
  41.         else
  42. 		 cout << left - st +1  ;
  43. 		    if (m) cout << " ";
  44. 	}
  45. //
  46. //	5
  47. //10 1 10 3 4
  48. //4
  49. //1 10
  50. //2 9
  51. //3 4
  52. //2 2
  53.  
  54.    cout << endl;
  55. 	return 0 ;
  56. }
  57.  
Success #stdin #stdout 0.01s 5356KB
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https://ideone.com/OvoHnc
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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