a = Array.new(10, 0)
x = "%010d" % 0
puts x
STDOUT.flush
str = gets.split
zero_num = str[0].to_i
if str[1] == "unlocked"
    exit
end
9.times do |i|
    i += 1
    y = i
    10.times do |j|
        s = "%010d" % y
        puts s
        STDOUT.flush
        y *= 10
        str = gets.split
        if str[1] == "unlocked"
            exit
        end
        h = str[0].to_i
        if h > zero_num
            a[9 - j] = i
        end
    end
end
puts a.join
STDOUT.flush