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def f(a,b,c)
	if a==0 and b==0
		c+1
	elsif c==0
		f(a,b-1,1)
	elsif b==0
		f(a-1,c,c)
	else
		f(a,b-1,f(a,b,c-1))
	end
end
 
puts f(2,2,2)

Runtime error #stdin #stdout #stderr 4.84s 9696KB

stdin

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Standard input is empty

stdout

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Standard output is empty

stderr

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prog.rb:5: stack level too deep (SystemStackError)

https://ideone.com/Ub1M86

language:

Ruby (ruby 2.5.5)

created:

visibility:

public

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