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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone{
  6. 	public static void main (String[] args) throws java.lang.Exception{
  7. 		double k;
  8. 		double d = 0;
  9. 		int b=1;
  10. 		Scanner x = new Scanner(System.in);
  11. 		int n=x.nextInt();
  12. 		for (int i=1;i<=n;i++){
  13. 			k = x.nextDouble();
  14. 			k/=b;
  15. 			b*=i;
  16. 			d+=k;
  17. 		}
  18. 		System.out.print(d);
  19. 	}
  20. }
Success #stdin #stdout 0.06s 711680KB
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stdin
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3	6 9 3
stdout
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16.5
https://ideone.com/oc4b3L
А136и
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
secret

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