#![allow(unused_imports)]
#![allow(non_snake_case)]
use std::cmp::*;
use std::collections::*;
use std::io::Write;

#[allow(unused_macros)]
macro_rules! debug {
    ($($e:expr),*) => {
        #[cfg(debug_assertions)]
        $({
            let (e, mut err) = (stringify!($e), std::io::stderr());
            writeln!(err, "{} = {:?}", e, $e).unwrap()
        })*
    };
}

fn main() {
    let mut s = read::<String>().chars().collect::<Vec<_>>();
    let t = read::<String>().chars().collect::<Vec<_>>();
    if t.len() == 1 {
        if s.iter().any(|&ch| ch == t[0]) {
            println!("-1");
            return;
        }
        println!("0");
        return;
    }
    if t.len() > s.len() {
        println!("0");
        return;
    }
    let mut ans = 0;
    for i in 0..s.len() + 1 - t.len() {
        if (0..t.len()).all(|j| t[j] == s[i + j]) {
            ans += 1;
            s[i + t.len() - 2] = '.';
        }
    }
    println!("{}", ans);
}

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}