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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 n=sc.nextInt();
  14. 		Queue<Integer> q= new LinkedList<Integer>();
  15. 		Queue<Integer> q1= new LinkedList<Integer>();
  16. 		q.offer(0);
  17. 		for(int i=1;i<=n;i++)
  18. 		{
  19. 			int j=i;
  20. 			while(!q.isEmpty())
  21. 			{
  22. 			int x=q.poll();
  23. 			int res1=x-i;
  24. 			int res2=x+i;
  25. 			q1.offer(res1);
  26. 			q1.offer(res2);
  27.  
  28. 			if(q1.contains(n))
  29. 			{
  30. 				System.out.println(i);
  31. 				return;
  32. 			}
  33. 			}
  34. 			q.addAll(q1);
  35. 			q1= new LinkedList<Integer>();
  36. 		}
  37. 	}
  38. }
Success #stdin #stdout 0.06s 321344KB
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https://ideone.com/NoVB3w
language:
Java (12.0.1)
created:
7 years ago
visibility:
public

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