package main

import (
	"fmt"
	"strings"
)

func main() {
	var a, b int
	fmt.Scan(&a, &b)
	for i := a; i <= b; i++ {
		if i%3 == 0 {
			fmt.Println(i)
		} else if strings.Count("3", fmt.Sprint(i)) > 0 {
			fmt.Println(i)
		}
	}
}