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naxmefy/descandents.rb

Created May 4, 2021 22:30
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descandents.rb
a=gets.chomp
h=gets.to_i.times.flat_map{s,t=gets.split
{t=>[s],s=>[]}}.reduce{|s,n|s.merge(n){|_,v,w|v+w}}
l=->(r){r+r.flat_map{|a|l[h[a]]}}
r=l[h[a]]
puts r[0]?r.sort: :Nobody
# example
# Emesse
# Lelle Emesse
# Rofl Lelle
# LoLo
# => Lelle + Rofl (but not LoLo)
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