#include<bits/stdc++.h>
#define REP(i,x) for(int i=0,i##_len=(x);i<i##_len;++i)
#define rep(i,a,b) for(int i=(a),i##_len(b);i<i##_len;++i)
#define All(x) begin(x),end(x)
#define rAll(x) rbegin(x),rend(x)
using namespace std;
using ll = long long;

template< unsigned mod >
struct RollingHash {
  vector< unsigned > hashed, power;

  inline unsigned mul(unsigned a, unsigned b) const {
    unsigned long long x = (unsigned long long) a * b;
    unsigned xh = (unsigned) (x >> 32), xl = (unsigned) x, d, m;
    asm("divl %4; \n\t" : "=a" (d), "=d" (m) : "d" (xh), "a" (xl), "r" (mod));
    return m;
  }

  RollingHash(const string &s, unsigned base = 10007) {
    int sz = (int) s.size();
    hashed.assign(sz + 1, 0);
    power.assign(sz + 1, 0);
    power[0] = 1;
    for(int i = 0; i < sz; i++) {
      power[i + 1] = mul(power[i], base);
      hashed[i + 1] = mul(hashed[i], base) + s[i];
      if(hashed[i + 1] >= mod) hashed[i + 1] -= mod;
    }
  }

  unsigned get(int l, int r) const {
    unsigned ret = hashed[r] + mod - mul(hashed[l], power[r - l]);
    if(ret >= mod) ret -= mod;
    return ret;
  }

  unsigned connect(unsigned h1, int h2, int h2len) const {
    unsigned ret = mul(h1, power[h2len]) + h2;
    if(ret >= mod) ret -= mod;
    return ret;
  }

  int LCP(const RollingHash< mod > &b, int l1, int r1, int l2, int r2) {
    int len = min(r1 - l1, r2 - l2);
    int low = -1, high = len + 1;
    while(high - low > 1) {
      int mid = (low + high) / 2;
      if(get(l1, l1 + mid) == b.get(l2, l2 + mid)) low = mid;
      else high = mid;
    }
    return (low);
  }
};

using RH = RollingHash< 1000000007 >;
int main(){
    string s,t;
    cin>>s>>t;
    assert(s.size()<=1000);
    assert(t.size()<=1000);
    if(t.size()==1&&s.find(t.front())!=string::npos){
        cout<<-1<<endl;
        return 0;
    }
    int ans=0;
    RH rs(s),rt(t);
    for(int i=0;i+t.size()<=s.size();++i){
        if(rs.get(i,i+t.size())==rt.get(0,t.size())){
            ans++;
            i+=t.size()-2;
        }
    }
    cout<<ans<<endl;
}