/*
doubutu 3  asi 8
Yes No
最小 doubutu x 2
最大 doubutu x 4
*/

function main(input){
  input = input.split(" ");
  var x = parseInt(input[0]);
  var y = parseInt(input[1]);
  if(y<=4*x || y>=2*x){console.log("Yes");}
  else{console.log("No");}
}
main(require("fs").readFileSync("/dev/stdin", "utf8"));
