#include<bits/stdc++.h> using namespace std; typedef long long ll; typedef long double ld; typedef pair<ll,ll> P; typedef pair<int,int> Pi; #define rep(i, n) for (ll i = 0; i < n; i++) #define FOR(i, a, b) for (ll i = a; i < b; i++) #define fi first #define se second #define endl "\n" template<typename T> inline bool chmax(T &a, T b){if(a<b){a=b;return true;}return false;} template<typename T> inline bool chmin(T &a, T b){if(a>b){a=b;return true;}return false;} template<typename T> ostream& operator<<(ostream& s,const complex<T>& d) {return s<<"("<<d.real()<<", "<<d.imag()<< ")";} template<typename T1, typename T2> ostream& operator<<(ostream& s,const pair<T1,T2>& d) {return s<<"("<<d.first<<", "<<d.second<<")";} template<typename T> ostream& operator<<(ostream& s, const vector<T>& d){ int len=d.size(); rep(i,len){ s<<d[i];if(i<len-1) s<<" "; } return s; } template<typename T> ostream& operator<<(ostream& s,const vector<vector<T>>& d){ int len=d.size(); rep(i,len){ s<<d[i]<<endl; } return s; } template<typename T> ostream& operator<<(ostream& s,const set<T>& v){ s<<"{ "; for(auto itr=v.begin();itr!=v.end();++itr) { if (itr!=v.begin()) {s<< ", ";} s<<(*itr); } s<<" }"; return s; } template<typename T1, typename T2> ostream& operator<<(ostream& s,const map<T1,T2>& m){ s<<"{"<<endl; for(auto itr=m.begin();itr!=m.end();++itr){ s<<" "<<(*itr).first<<" : "<<(*itr).second<<endl; } s<<"}"<<endl; return s; } const ll mod=1e9+7; const ll inf=1e17; const int INF=1e9; const double PI=acos(-1); const double EPS=1e-10; int main(){ cin.tie(0); ios::sync_with_stdio(false); string s,t; cin>>s>>t; int n=s.size(),m=t.size(); bool flag=false; rep(i,n){ if(s.substr(i,m)==t) flag=true; } if(flag && m==1){ cout<<-1<<endl; return 0; } int ans=0; rep(i,n){ if(s.substr(i,m)==t){ i+=m-2; ans++; } } cout<<ans<<endl; }