num = gets.to_i
words1 = gets.split
words2 = gets.split
differ = Array.new
index = 0

# element num == 1
if num == 1
    puts 1, words1, words2
    return
end

num.times do |i|
    if words1[i] != words2[i]
        index = i + 1
        break
    end
end

puts index, words1[index-1], words2[index-1]