lib C
  fun strtoll(s : UInt8*, p : UInt8**, b : Int32) : Int64
end

class String
  def to_i64
    C.strtoll(self, nil, 10)
  end
end

h, w, q = read_line.split.map(&.to_i64)
a = Hash(Int64, Int64).new(h)
sum = h * w
q.times do |i|
  y, x = read_line.split.map(&.to_i64.pred)
  if a[x] > y
    sum -= a[x] - y
    a[x] = y
  end
  puts sum
end