N = gets.to_i
S = gets.chomp
T = gets.chomp
Q = gets.to_i
state = S <=> T
idx_list = [*0..N]

nums = Array.new(N) { Array.new(2, 0) }
N.times do |i|
  nums[i][0] = S[i].to_i
  nums[i][1] = T[i].to_i
end

Q.times do
  c, x, y = gets.chomp.split
  x = x.to_i - 1
  y = y.to_i

  idx = idx_list.bsearch_index { |i| i > x }

  if idx.nil?
    idx_list << x
  else
    idx_list.insert(idx, x)
  end

  if c == 'S'
    nums[x][0] = y
  else
    nums[x][1] = y
  end

  until idx_list.empty?
    i = idx_list.first

    state = nums[i][0] <=> nums[i][1]
    break if state != 0

    idx_list.shift
  end

  if idx_list.empty?
    state = 0
  end

  case state
  when -1
    puts '<'
  when 0
    puts '=='
  when 1
    puts '>'
  end
end