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  1.  
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4. using ll=long long;
  5. #define FL(i,a,b) for(ll i=a;i<b;i++)
  6.  
  7.  
  8. int main() {
  9. 	ll n,k,x;cin>>n>>k;
  10. 	map<ll,ll> a;
  11. 	FL(i,0,n){
  12. 		cin>>x;
  13. 		ll temp=a.size();
  14. 		a.insert({x,i});
  15. 		if(a.size()==temp){
  16. 			if(a.size()-a[x]<=k){
  17. 				cout<<x;
  18. 				return 0;
  19. 			}
  20. 		}
  21. 	}
  22. 	cout<<"DEPTRY";
  23.  
  24. }
  25.  
Success #stdin #stdout 0.01s 5280KB
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8
https://ideone.com/aqfE08
language:
C++14 (gcc 8.3)
created:
26 days ago
visibility:
public

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