package main

import "fmt"

func main() {
	var a, b int
	fmt.Scan(&a, &b)

	for x := a; x <= b; x++ {
		f := false

		if x%3 == 0 {
			f = true
		}

		for y := x; y != 0; y /= 10 {
			if y%10 == 3 {
				f = true
			}
		}

		if f {
			fmt.Println(x)
		}
	}
}