import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        String t = sc.next();
        if (t.length() == 1 && s.indexOf(t) >= 0) {
            System.out.println(-1);
            return;
        }
        int idx = 0;
        int count = 0;
        while ((idx = s.indexOf(t, idx)) >= 0) {
            count++;
            idx += t.length() - 1;
        }
        System.out.println(count);
    }
}