fork(1) download 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main(){
  5. 	int count = 0;
  6. 	int n,x;
  7. 	cin >> n >> x;
  8. 	int A[n];
  9. 	for (int i = 0; i < n; i++){
  10. 		cin >> A[i];
  11. 	}
  12. 	sort(A, A + n);
  13. 	int f = 0;
  14. 	int e = n -1;
  15. 	for (int i = 0; i < n; i++){
  16. 		cout << A[i] << " ";
  17. 	}
  18. 	cout << endl;
  19. 	while (e >= f){
  20. 		if (A[f] + A[e] == x){
  21. 			count++;
  22. 			cout << f << "-" << A[f] << " " << e << "-" << A[e] << "/";
  23. 			if (A[e] == A[e - 1] and e != f){
  24. 				e--;
  25. 			}
  26. 			else if (A[f] == A[f + 1]and f != e){
  27. 				f++;
  28. 			}
  29. 			else{
  30. 				f++;
  31. 			}
  32. 		}
  33. 		else if (A[f] + A[e] > x){
  34. 			e--;
  35. 		}
  36. 		else{
  37. 			f++;
  38. 		}
  39. 	}
  40. //	cout << count;
  41. }
  42. //
Success #stdin #stdout 0.01s 5324KB
comments (?)
stdin 
7 6
1 2 4 3 4 5 3
stdout 
1 2 3 3 4 4 5 
0-1 6-5/1-2 5-4/1-2 4-4/2-3 3-3/2-3 2-3/
https://ideone.com/wjBUz3
language:
C++14 (gcc 8.3)
created:
6 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!