N, M, K = gets.split.map(&:to_i)
op, *cols = gets.split
op = op.to_sym
B = cols.map{|b| b.to_i}
A = N.times.map{ gets.to_i}
A.sort!

ans = B.inject(0) do |s,b|
  c = A.bsearch_index do |a|
    a.send(op,b) >= K
  end
  s + (c ? N - c : 0)
end
puts ans