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  1. # your code goes here 
  2. f=@(n)sum(fix(n./(5.^(1:fix(log(n)/1.6)))))
  3. f(1),f(5),f(100),f(666),f(2016),f(1234567891011121314151617181920),
  4.  
Success #stdin #stdout 0.47s 121728KB
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f =

@(n) sum (fix (n ./ (5 .^ 1:fix (log (n) / 1.6))))

ans = 0
ans =  1
ans =  24
ans =  165
ans =  502
ans =    3.0864e+29
https://ideone.com/XhlzoH
language:
Octave (octave 4.4.1)
created:
7 years ago
visibility:
public

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