function Main(input) {
    var tmp = input.split(" ");
    var num = parseInt(tmp[0]);
    var leg = parseInt(tmp[1]);
    
    if(leg%2===1){
        console.log("No");
    }else{
        if(num*2<=leg && leg<=num*4){
            console.log("Yes");
        }else{
            console.log("No");
        }
    }
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));