#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
#define DUMP(x) cout << #x << " = " << (x) << endl;
#define FOR(i, m, n) for (ll i = m; i < n; i++)
#define IFOR(i, m, n) for (ll i = n - 1; i >= m; i--)
#define REP(i, n) FOR(i, 0, n)
#define IREP(i, n) IFOR(i, 0, n)
#define FOREACH(x, a) for (auto&(x) : (a))
#define ALL(v) (v).begin(), (v).end()
#define SZ(x) ll(x.size())

int main() {
  string s, t;
  cin >> s >> t;
  ll n = SZ(s), m = SZ(t);
  if(m==1){
    REP(i,n){
      if(s.substr(i,1) == t){
        cout << -1 << endl;
        return 0;
      }
    }
    cout << 0 << endl;
    return 0;
  }
  ll ans = 0, i=0;
  while(i<n-m+1){
    string  u = s.substr(i,m);
    if(u != t){
      i++;
      continue;
    }
    ans++;
    i += m-1;
  }
  cout << ans << endl;
}