# frozen_string_literal: true

def pair?(seq)
  seq[0] == seq[1] || seq[1] == seq[2] || seq[2] == seq[0]
end

def min_or_max?(seq)
  seq[1] == seq.min || seq[1] == seq.max
end

def kadomatsu?(seq)
  return false if pair?(seq)
  return true if min_or_max?(seq)

  false
end

def count_kadomatsu(seq)
  seq.max.times.map do |i|
    1 if kadomatsu?(seq.map { |k| k % (i + 1) })
  end.compact.sum
end

# --------------------------------------------- exec

AS = gets.chomp.split.map(&:to_i)

puts(if pair?(AS)
       0
     elsif min_or_max?(AS)
       'INF'
     else
       count_kadomatsu(AS)
     end)