h, w = gets.split.map(&:to_i)
map = Array.new(h){|y| Array.new(w){|x| (x + y).even? ? "white" : "black"}}

gets
while line = gets do
  s, k = line.split
  k = k.to_i

  case s
  when "R" then
    map[k].rotate!(-1)
  when "C" then
    tmp = map[-1][k]
    (h-1).downto(1) do |y|
      map[y][k] = map[y-1][k]
    end
    map[0][k] = tmp
  end
end

puts map[0][0]