using System;
using System.Linq;

public class P1005 {
    public static void Main() {
        var s = Console.ReadLine();
        var t = Console.ReadLine();
        if(t.Length == 1 && s.Contains(t)) {
            Console.WriteLine("-1");
        } else {
            int count = 0;
            for(int i=0; i<s.Length + 1 - t.Length; i++) {
                if(s.Substring(i).StartsWith(t)) {
                    count += 1;
                    i += t.Length - 2;
                }
            }
            Console.WriteLine(count);
        }
    }
}