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  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. 	map<int,int> num;
  16. 	for (int x : A){
  17. 		num[x]++;
  18. 	}
  19. 	for (auto i : num){
  20. 		cout << i.first << "-" << i.second << endl;
  21. 	}
  22. 	while (e > f){
  23. 		if (A[f] + A[e] == x){
  24. 			count ++;
  25. //			cout << A[f] << "-" << A[e] << endl;
  26. 			if (A[e] == A[e - 1] and e != f){
  27. 				e--;
  28. 			}
  29. 			else if (A[f] == A[f + 1]and f != e){
  30. 				f++;
  31. 			}
  32. 			else{
  33. 				f++;
  34. 			}
  35. 		}
  36. 		else if (A[f] + A[e] > x){
  37. 			e--;
  38. 		}
  39. 		else{
  40. 			f++;
  41. 		}
  42. 	}
  43. //	cout << count;
  44. }
  45.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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8 6
1 2 4 3 4 5 3 3
stdout
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1-1
2-1
3-3
4-2
5-1
https://ideone.com/313aaC
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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