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  1. import java.util.Scanner;
  2.  public class Main
  3. {
  4. 	 public static Scanner in = new Scanner(System.in);
  5. 	public static void main(String[]args) {
  6.  
  7. 		double a=in.nextDouble();
  8. 		double s =1;
  9. 		double p=1;
  10. 		double m=1;
  11. 			int l=1;
  12. 		for(int i=1;i<(a+1);i++)
  13. 		{
  14.  
  15.  
  16. 			for(;l<=i;l++)
  17. 			{
  18. 		    p=p*l;
  19.  
  20. 			}
  21.  
  22. 				s=s+m/p;
  23. 		}
  24.  
  25.  
  26. 		System.out.print(s);
  27.  
  28.  
  29. 	}
  30.  
  31. }
Success #stdin #stdout 0.12s 37120KB
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stdin
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4
stdout
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2.708333333333333
https://ideone.com/uxO54t
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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