# your code goes here
hit=false
S=""
10.times do |a|
	10.times do |b|
		10.times do |c|
			d=a.to_s<<b.to_s<<c.to_s
			if hit==false
				puts d
			end
			S=STDIN.gets
			if S=="unlocked"
				hit=true
			end
		end
	end
end