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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n;
  6. 	cin>>n;
  7. 	vector<int> males;
  8. 	vector<int> females;
  9. 	for(int i=0;i<n;i++){
  10. 		int height;
  11. 		cin>>height;
  12. 		males.push_back(height);
  13. 	}
  14. 	for(int i=0;i<n;i++){
  15. 		int height;
  16. 		cin>>height;
  17. 		females.push_back(height);
  18. 	}
  19. 	int pairs=0;
  20. 	vector<int> positiveMales;
  21. 	vector<int> positiveFemales;
  22. 	vector<int> negativeMales;
  23. 	vector<int> negativeFemales;
  24.  
  25. 	for(int i=0;i<n;i++){
  26. 		if(males[i]<0)
  27. 			negativeMales.push_back(abs(males[i]));
  28. 		else
  29. 			positiveMales.push_back(males[i]);
  30. 	}
  31. 	for(int i=0;i<n;i++){
  32. 		if(females[i]<0)
  33. 			negativeFemales.push_back(abs(females[i]));
  34. 		else
  35. 			positiveFemales.push_back(females[i]);
  36. 	}
  37. 	sort(negativeMales.begin(), negativeMales.end());
  38. 	sort(positiveMales.begin(), positiveMales.end());
  39. 	sort(negativeFemales.begin(), negativeFemales.end());
  40. 	sort(positiveFemales.begin(), positiveFemales.end());
  41. 	int i=0, j=0;
  42. 	while(i<positiveMales.size() && j<negativeFemales.size()){
  43. 		if(positiveMales[i]<negativeFemales[j]){
  44. 			pairs++;
  45. 			i++;
  46. 			j++;
  47. 		}
  48. 		else{
  49. 			j++;
  50. 		}
  51. 	}
  52. 	i=0, j=0;
  53. 	while(i<positiveFemales.size() && j<negativeMales.size()){
  54. 		if(positiveFemales[i]<negativeMales[j]){
  55. 			pairs++;
  56. 			i++;
  57. 			j++;
  58. 		}
  59. 		else{
  60. 			j++;
  61. 		}
  62. 	}
  63. 	cout<<pairs;
  64. 	return 0;
  65. }
Success #stdin #stdout 0s 5324KB
comments (?)
stdin 
7
-1900 -2000 -2500 1500 1600 2500 -2500
1800 -1550 2200 -1550 2100 -2500 -1700
stdout 
5
https://ideone.com/t72nVy
language:
C++ (gcc 8.3)
created:
3 hours ago
visibility:
public

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