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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		Scanner sc=new Scanner(System.in);
  13. 	   int k=sc.nextInt();
  14. 		int n=sc.nextInt();
  15. 			int arr[]=new int[n];
  16. 		for(int i=0;i<n;i++){
  17. 			arr[i]=sc.nextInt();
  18. 		}
  19. 		HashMap<Integer,Integer>hm=new HashMap<>();
  20. 		for(int i=0;i<n;i++){
  21. 			if(hm.containsKey(arr[i])){
  22. 				int idx=i-hm.get(arr[i]);
  23. 				if(idx<=k){
  24. 					System.out.print(true);
  25. 					return ;
  26. 				}
  27. 			}
  28. 			hm.put(arr[i],i);
  29.  
  30. 		}
  31. 	System.out.println(false);
  32.  
  33.  
  34.  
  35. 	}
  36. }
Success #stdin #stdout 0.12s 56640KB
comments (?)
stdin
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2
7
2
3
3
7
4
1
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stdout
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true
https://ideone.com/CVLSRR
language:
Java (HotSpot 12)
created:
2 days ago
visibility:
public

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