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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int arr[]={1, 2, 3, 1, 4, 5};
  6. 	int n=sizeof(arr)/sizeof(arr[0]);
  7. 	int k=3;
  8. 	bool flag=false;
  9. 	unordered_map<int, int> mp;
  10. 	for(int i=0;i<n;i++){
  11. 		if(mp.find(arr[i])!=mp.end()){
  12. 			if(i - mp[arr[i]] <= k) {
  13.                 flag = true;
  14.                 cout << "yes";
  15.                 break;
  16.             }
  17. 		}
  18. 		mp[arr[i]]=i;
  19. 	}
  20. 	if(flag==false)
  21. 		cout<<"no";
  22. 	return 0;
  23. }
  24.  
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin 
Standard input is empty
stdout 
yes
https://ideone.com/8Rw6IX
language:
C++ (gcc 8.3)
created:
2 hours ago
visibility:
public

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