h,w,q=gets.split.map(&:to_i)
seki = Hash.new{h}
sum = h*w

q.times{
  y,x=gets.split.map(&:to_i)
  if seki[x] > y-1
    sum -= seki[x] - (y-1)
    seki[x] = y-1
  end
  p sum
}