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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. 		// your code goes here
  13. 		int n = 3;
  14. 		int m = 27;
  15. 		int ans =-1;
  16.  
  17. 		if(n==1){
  18. 		ans = m;
  19. 		}
  20. 		else{
  21. 		int  l =1;
  22. 		int r = m;
  23. 		while(l<=r){
  24. 		int mid = (l+r)/2;
  25. 		long x = 1;
  26. 		for(int i =0;i<n;i++){
  27. 			x*= mid;
  28. 		    if(x>m){
  29. 		    	break;
  30. 		    }
  31. 		}
  32. 		 if(x==m){
  33. 		 	ans = mid;
  34. 		 	break;
  35. 		 }
  36. 		 else if(x>m){
  37. 		 	r = mid-1;
  38. 		 }
  39. 		 else{
  40. 		 	l = mid+1;
  41. 		 }
  42.  
  43. 		}
  44. 		}
  45. 		System.out.println(ans);
  46. 		}
  47. }
Success #stdin #stdout 0.1s 52528KB
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3
https://ideone.com/lqzeYA
language:
Java (HotSpot 12)
created:
2 days ago
visibility:
public

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