#include <bits/stdc++.h> 

using namespace std;

int main(void)
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    
    string s, t;

    cin >> s;
    cin >> t;

    int res = 0;

    int n = s.length();
    int m = t.length();
    int idx = 0;
    while (1)
    {
        if (idx > n - m)
        {
            break;
        }
        if (s.substr(idx, m) == t)
        {
            res++;
            idx += m;
        }
        else
        {
            idx++;
        }
    }
    
    if (t.length() == 1)
    {
        if (res > 0)
        {
            cout << -1 << '\n';
        }
        else
        {
            cout << res << '\n';
        }
    }
    else
    {
        cout << res << '\n';
    }
    return 0;
}