using System;

public class Hello
{
    static void Main()
    {
        var s = Console.ReadLine().Trim();
        var t = Console.ReadLine().Trim();
        getAns(s, t);

    }
    static void getAns (string s, string t)
    {
        if (t.Length == 1) 
        {
            if (s.IndexOf(t, 0) == -1) { Console.WriteLine(0); return; }
            else { Console.WriteLine(-1); return; }
        }
        var count = 0;
        var sL = s.Length;
        var tL = t.Length;
        var p = 0;
        while (p < sL -1)
        {
            var w = s.IndexOf(t, p);
            if (w == -1) { Console.WriteLine(count) ; return; }
            else
            {
                count++;
                p = w + tL - 1;
            }
        }
        Console.WriteLine(count);
    }
}