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  1. import java.io.*;
  2. import java.util.Scanner;
  3.  
  4. class Main
  5. {
  6. 	public static void main (String[] args) throws java.lang.Exception
  7. 	{
  8. 		Scanner in = new Scanner(System.in);
  9. 		long n = in.nextLong();
  10. 		long x = 1;
  11. 		long k = 1;
  12. 		long s = 1;
  13. 		while (s<n) {
  14. 			k++;
  15. 			x = x*2 + k;
  16. 			s = s + x;
  17. 		}
  18. 		System.out.print(k);
  19. 	}
  20. }
Success #stdin #stdout 0.08s 2184192KB
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https://ideone.com/NgeGr5
e-olymp 127. Баксы в банке
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
secret

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