fn getline() -> String {
    let mut a = String::new();
    std::io::stdin().read_line(&mut a).ok();
    return a;
}

fn main() {
    let input = getline();
    let splited: Vec<&str> = input.trim().split(" ").collect();
    let a = splited[0].parse::<u32>().unwrap();
    let b = splited[1].parse::<u32>().unwrap();
    let result = logic(a, b);
    for i in result.iter() {
        println!("{}", i);
    }
}

fn check_three(x: u32) -> bool {
    let s = x.to_string();
    for char in s.chars() {
        if char == '3' {
            return true;
        }
    }
    return false;
}

#[test]
fn test_check_three() {
    let a = check_three(132);
    assert_eq!(a, true);
    let a = check_three(568468);
    assert_eq!(a, false);
}

fn logic(a: u32, b: u32) -> Vec<u32> {
    let mut res: Vec<u32> = vec![];
    for i in a..b+1 {
        if i % 3 == 0 {
            res.push(i);
        } else if check_three(i){
            res.push(i);
        }
    }
    return res;
}

#[test]
fn test_logic() {
    let res = logic(1, 10);
    assert_eq!(res, vec![3, 6, 9]);
    let res = logic(10, 20);
    assert_eq!(res, vec![12, 13, 15, 18]);
}