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def ileZer(n)
	ile=0
	while n>=5 do
		ile+=n/5
		n=n/5
	end
	ile
end
 
t=gets.to_i
while t>0 do
	t=t-1
	n=gets.to_i
	puts ileZer(n)
end

Success #stdin #stdout 0.01s 5772KB

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stdout

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https://ideone.com/9tB3hC

language:

Ruby (ruby 2.5.5)

created:

visibility:

public

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