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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	int a[]={5,6,4,3,6};
  7. 	int n=sizeof(a)/sizeof(a[0]);
  8. 	int k=7;
  9. 	unordered_map<int,int>b;
  10. 	for(int i=0;i<n;i++){
  11. 		int x=k-a[i];
  12. 		if(b.find(b[x])!=b.end()){
  13. 			cout<<"yes";
  14. 			return 0;
  15. 		}
  16. 		b[a[i]]++;
  17. 	}
  18. 	cout<< "no";
  19.  
  20. 	return 0;
  21. }
Success #stdin #stdout 0.01s 5272KB
comments (?)
stdin 
Standard input is empty
stdout 
yes
https://ideone.com/G9zCrC
language:
C++ (gcc 8.3)
created:
5 days ago
visibility:
public

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