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  1. import java.util.*;
  2. import java.lang.*;
  3.  
  4. class Ideone
  5. {   static boolean Cows(int arr[],int dist,int cows){
  6. 	   int Cnt=1,last=arr[0];
  7. 	   for(int i=1;i<arr.length;i++){
  8. 	   	  if(arr[i]-last>=dist){
  9. 	   	  	Cnt++;
  10. 	   	  	last=arr[i];
  11. 	   	  }
  12. 	   	  if(Cnt>=cows) return true;
  13. 	   }
  14. 	   return false;
  15.  
  16.     }
  17. 	static int BS(int arr[],int C,int N){
  18. 	      int low=1,high=arr[N-1]-arr[0];
  19. 	      while(low<=high){
  20. 	      	int mid=(low+high)/2;
  21. 	      	if(Cows(arr,mid,C)) low=mid+1;
  22. 	      	else high=mid-1;
  23. 	      }
  24. 	      return high;
  25.     }
  26. 	public static void main (String[] args) throws java.lang.Exception
  27. 	{
  28. 		Scanner sc=new Scanner(System.in);
  29. 		int T=sc.nextInt();
  30. 		while(T>0){
  31. 		int N=sc.nextInt();
  32. 		int C=sc.nextInt();
  33. 		int arr[]=new int[N];
  34. 		for(int i=0;i<N;i++){
  35. 			arr[i]=sc.nextInt();
  36. 		}
  37. 		Arrays.sort(arr);
  38. 		System.out.println(BS(arr,C,N));
  39. 		T--;
  40. 		}
  41. 	}
  42. }
Success #stdin #stdout 0.11s 54612KB
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https://ideone.com/fJFMQd
language:
Java (HotSpot 12)
created:
8 days ago
visibility:
public

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