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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. 	static int  gcd(int a, int b)
  11. 	{
  12. 		while(b!=0)
  13. 		{
  14. 			int temp=a%b;
  15. 			a=b;
  16. 			b=temp;
  17. 		}
  18. 		return a;
  19.  
  20. 	}
  21.  
  22. 	static boolean isgcd1(List<Integer> li)
  23. 	{
  24. 		for(int i=0;i<li.size()-1;i++)
  25. 		{
  26. 			if(gcd(li.get(i),li.get(i+1))==1)
  27. 			return true;
  28. 		}
  29. 		return false;
  30. 	}
  31. 	public static void main (String[] args) throws java.lang.Exception
  32. 	{
  33. 		// your code goes here
  34. 		Scanner sc=new Scanner(System.in);
  35. 		int n=sc.nextInt();
  36. 		int a[]=new int[n];
  37. 		int k=sc.nextInt();
  38. 		for(int i=0;i<n;i++)
  39. 		a[i]=sc.nextInt();
  40. 		int count=0;
  41. 		// int n=a.length;
  42. 		for(int i=0;i<n;i++)
  43. 		{
  44. 			List<Integer> li=new ArrayList<>();
  45. 			for(int j=0;j<k;j++)
  46. 			{
  47. 				li.add(a[(i+j)%n]);
  48. 			}
  49. 			if(!isgcd1(li))
  50. 			count++;
  51. 		}
  52.  
  53. 		System.out.println(count);
  54.  
  55. 	}
  56. }
Success #stdin #stdout 0.14s 54508KB
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https://ideone.com/Npq5MI
language:
Java (HotSpot 12)
created:
7 days ago
visibility:
public

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