require 'prime'
y, x = gets.split.map(&:to_i)
if Prime.prime?(x) && Prime.prime?(y)
  puts :Second
  exit
end
if Prime.prime?(x) || Prime.prime?(y)
  x, y = y, x if Prime.prime?(y)
  if Prime.prime?(x + 1)
    puts :Second
    exit
  end
end
a = (y + 1...Float::INFINITY).find { |i| Prime.prime?(i) }
b = (x + 1...Float::INFINITY).find { |i| Prime.prime?(i) }
c = a - y
d = b - x
puts [:Second, :First][c + d & 1]