#include<bits/stdc++.h>
using namespace std;
const int64_t inf = 1e18;
/*
#include<atcoder/string>
// const int64_t mod = 998244353;
// const int64_t mod = 1000000007;
*/


vector<int> z_algorithm(string s) {
    vector<int> res(int(s.size()));
    res[0] = (int) s.size();
    int j = 0;
    for (int i = 1; i < (int)s.size();) {
        while (i + j < (int)s.size() && s[j] == s[i+j]) j++;
        res[i] = j;
        if (j == 0) {i++; continue;}
        int k = 1;
        while (i + k < (int) s.size() && k + res[k] < j) res[i+k] = res[k], k++;
        i += k, j -= k;
    }
    return res;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    string s, t;
    cin >> s >> t;
    vector<int> z = z_algorithm(t + s);
    int n = t.size();
    int cnt = 0;
    int ans = 0;
    for (int i = n; i < z.size();) {
        if (z[i] >= n) {
            ans++;
            i += n-1;
        } else {
            i++;
        }
    }
    if (t.size() == 1) ans = -1;
    cout << ans << endl;
}