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  1. #include <iostream>
  2. #include<vector>
  3. #include<unordered_map>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	// your code goes here
  8. 	vector<int> a={1,3,4,5,2,7,8};
  9. 	unordered_map<int,int> m;
  10. 	int k=-7;
  11. 	for(int i=0;i<a.size();i++) {
  12. 		int sec=a[i]+k;
  13. 		if(m.find(sec)!=m.end()) {
  14. 			cout<<a[i]<<" "<<sec<<endl;
  15. 		}
  16. 		m[a[i]]=i;
  17. 	}
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 5320KB
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https://ideone.com/zKQrrL
language:
C++14 (gcc 8.3)
created:
11 hours ago
visibility:
public

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