Hastur's Broadcast

c1, n1 = gets.split.map(&:to_i)

c2, n2 = gets.split.map(&:to_i)

c3, n3 = gets.split.map(&:to_i)

​

p (1 .. n1.lcm(n2).lcm(n3)).find { |m| m % n1 == c1 and m % n2 == c2 and m % n3 == c3 }