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.contains(t)) {
            System.out.println(-1);
            return;
        }
        int start = 0;
        int count = 0;
        while (true) {
            int result = s.indexOf(t, start);
            if (result == -1) {
                break;
            }
            count++;
            start = result + t.length() - 1;
        }
        System.out.println(count);
    }
}