import java.util.*
 
fun main(args: Array<String>){
  
  val(x,y) = readLine()!!.split(" ").map{it.toInt()}
 
  val max = 4*x
  val min = 2*x
  
  if(y < min || max < y){
    print("No")
  }else if(y % 2 != 0){
 	print("No")
  }else{
    print("Yes")
  }
  
}