fn main() {
    let mut xx = String::new();
    std::io::Read::read_to_string(&mut std::io::stdin(), &mut xx).ok();
    let xx: Vec<&str> = xx.split_whitespace().collect();

    let (mut s, t) = (xx[0], xx[1]);

    if t.len() == 1 {
        if s.contains(t) {
            println!("-1");
        } else {
            println!("0");
        }
    } else {
        let mut n = 0;
        while let Some(i) = s.find(t) {
            s = &s[i + t.len() - 1..];
            n += 1;
        }

        println!("{n}");
    }
}