#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
using namespace std;


int main()
{
    string s, t;
    cin >> s >> t;
    int ls = s.size(), lt = t.size(), cnt = 0;
    for (int i = 0; i < ls - lt + 1; i++){
        string temp = s.substr(i, lt);
        if (temp == t){
            cnt++;
            if (lt != 2) i += lt -1;
        }
    }
    cout << ((lt == 1 && cnt != 0) ? -1 : cnt) << endl;
}