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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	int arr[]={1,2,3,1,4,5};
  7. 	int n=sizeof(arr)/sizeof(arr[0]);
  8. 	int k=3;
  9. 	unordered_map<int,int>u;
  10. 	for(int i=0;i<n;i++){
  11. 		if(u.find(arr[i])!=u.end()){
  12. 			int dist=i-u[arr[i]];
  13. 			if(dist<=k){
  14. 				cout<<"Yes";
  15. 				u[arr[i]]=i;
  16. 				return 0;
  17. 			}
  18.  
  19. 		}
  20. 		else{
  21. 			u[arr[i]]=i;
  22. 		}
  23.  
  24. 	}
  25. 	cout<<"no";
  26. 	return 0;
  27. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
Standard input is empty
stdout 
Yes
https://ideone.com/lGuI8T
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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