#include<stdio.h>

int main(){
  int x,y;
  int i,j,n;
  scanf("%d %d",&x,&y);
  if(y%2==1){
    printf("No");
  }else{
   if(2*x<=y&&y<=4*x)
     printf("Yes");
    else
     printf("No"); 
  }
  return 0;
}
