#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  string s, t;
  cin >> s >> t;
  if (t.size() == 1 && s.contains(t)) {
    cout << -1 << endl;
  }
  else {
    int ans = 0;
    for (int i = 0; i < s.size(); ++i) {
      if (s.substr(i, t.size()) == t) {
        ++ans;
        i += t.size() - 1;
      }
    }
    cout << ans << endl;
  }
  return 0;
}