#!/usr/local/bin/ruby
class PlayWithNoel
  def initialize(*arg)
    @n,@uv, = arg
    @adj=Array.new(@n){Array.new}
    @uv.each{|u,v| @adj[u-1].push(v-1); @adj[v-1].push(u-1)}
    @match = Array.new(@n)
    @cover = Array.new(@n)
  end

  private
  def paint(st)
    rop = false
    @visited[st] = true
    @adj[st].each do |v|
      unless @visited[v]
        w = @match[v]
        if w.nil? || @visited[w].nil? && paint(w)
          rop, @match[st],@match[v] = true,v,st
          break
        end
      end
    end
    rop
  end

  public

  def ans
    r=0
    (0...@n).each do |i|
      unless @match[i]
        @visited = Array.new(@n)
        if paint(i)
          r+=1
        end
      end
    end
    @n-r
  end
end
### END: class PlayWithNoel
iod = STDIN
n = iod.gets.to_i
uv = Array.new(n-1){iod.gets.split.map &:to_i}
puts PlayWithNoel.new(n,uv).ans
exit 0