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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n ;
  6. 	cin>>n;
  7. 	int target;
  8. 	cin>>target;
  9. 	int arr[n];
  10. 	for(int i = 0; i< n ; i++){
  11. 		cin>>arr[i];
  12. 	}
  13. 	int count = 0;
  14. 	for(int i = 0; i< n ; i++){
  15. 		for(int j = i+1;j< n ; j++){
  16. 			if(arr[i]+arr[j] == target){
  17. 				count +=1;
  18. 			}
  19. 		}
  20. 	}
  21. 	cout << count;
  22.  
  23.     return 0;
  24. }
Success #stdin #stdout 0s 5308KB
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https://ideone.com/a53ddY
language:
C++ (gcc 8.3)
created:
17 hours ago
visibility:
public

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