A, B, C = gets.split.map(&:to_i).sort

if [A, B, C].inject(&:gcd) != 1
  puts 'INF'
  exit
end

LIM = 5 * 10 ** 6 + 1
dp = Array.new(LIM, false)
dp[0] = true

[A, B, C].each do |x|
  x.upto(LIM) do |y|
    next if !dp[y - x]
    dp[y] = true
  end
end

puts dp.count(false)