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  1. #include <bits/stdc++.h>
  2. #define ll long long
  3. #define all(x) x.begin(), x.end()
  4. #define endl '\n'
  5. using namespace std;
  6. //*** Accepted Ya Diaa ***
  7. //A is my love 'accepted'
  8. //I hate you 'Run Time Error'
  9. int IHateRecursion(int s,int e) {
  10. 	if (s==e) {
  11. 		return 1;
  12. 	}
  13. 	if (s>e) {
  14. 		return 0;
  15. 	}
  16. 	return IHateRecursion(s+1,e)+IHateRecursion(s+2,e)+IHateRecursion(s+3,e);
  17. }
  18. //>=x&&<=y
  19. ll count(vector<int>v,int x,int y) {
  20. 	return (upper_bound(all(v),y)-lower_bound(all(v),x));
  21. }
  22. bool can(vector<int>&v,int n,int c,int mid) {
  23. ll s=1,last=v[0];
  24. 	for (int i=1;i<n;i++) {
  25. 		if (v[i]-last>=mid) {
  26. 			s+=1;
  27. 			last=v[i];
  28. 			if (s>=c) {
  29. 				return true;
  30. 			}
  31. 		}
  32. 	}
  33. 	return s>=c;
  34. }
  35.  
  36. void solve() {
  37. 	ios::sync_with_stdio(false);
  38. 	cin.tie(nullptr);
  39. 	freopen("input.txt","r",stdin);
  40. 	freopen("output.txt","w",stdout);
  41. 		int n;cin>>n;
  42. 		vector<int>v(n);
  43. 		for (int i=0;i<n;i++) {
  44. 			cin>>v[i];}
  45. 		sort(all(v));
  46. 		if (v[0]*2>=v[n-1]) {
  47. 			cout<<0<<endl;
  48. 			return;
  49. 		}
  50. 		int l=0,r=n-1;
  51. 		int c=0;
  52. 		while (l<=r) {
  53. 			if (v[l]*2>=v[r]) {
  54. 				break;
  55. 			}
  56. 			c++;
  57. 			r--;
  58. 		}
  59. 	cout<<n-r-1<<endl;
  60. }
  61. int main() {
  62.  
  63. 	solve();
  64.  
  65. }
Success #stdin #stdout 0.01s 5316KB
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stdout 
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https://ideone.com/kkhUB0
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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