s = ''
tmp = 0
puts '0000000000'
x,judge = gets.chomp.split
x = x.to_i
if judge == 'unlocked'
    exit
end
if tmp < x
    tmp = x
    s = '0'
end
10.times{
    1.upto(9){|i|
        puts "%010d" % (i.to_s + s)
        STDOUT.flush
        x,judge = gets.chomp.split
        x = x.to_i
        if judge == 'unlocked'
            exit
        end
        if tmp < x
            tmp = x
            s = i.to_s + s
            break
        end
        }
    s = '0' + s
    }