function Main(input) {
  const data = input.split(" ");
  const A = Number(data[0]);
  const B = Number(data[1]);

  for (let i=A; i<=B; i++) {
    if (i%3===0 || Boolean(i.toString().match(/3/))) {
      console.log(i);
    } 
  }

}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));