#include <bits/stdc++.h>
using namespace std;

#define int long long

signed main(){
	string s, t;
	cin >> s >> t;
	int n = s.size();
	int m = t.size();
	int cnt = 0;

	if(m == 1 && s.find(t) != string::npos){
		cout << -1 << endl;
		return 0;
	}

	for(int i = 0;i < s.size();i++){
		if(i+m > s.size()) break;
		if(s.substr(i, m) == t){
			s.insert(i+m-1, ".");
			cnt++;
		}
	}
	cout << cnt << endl;
	

	return 0;
}