## %% require "clipboard" $gets = Clipboard.paste.encode("cp932").split("\n").reverse $readlines = Clipboard.paste.encode("cp932") require "set" class Start def main _ = input echo "? aa" while true x = readlines.gsub("\r", "").split("\n") break if x.size >= 2 y = x[0] break if y.include?("!") echo "? #{y[-1]}a" end end protected def echo(*x) print(*x) puts end def input = gets.chomp end Start.new.main