#include <iostream>
#include <string>
using namespace std;
int main(void) {
	string s, t;
	cin >> s >> t;
	int pos = 0, ans = 0;
	while (s.find(t, pos) != string::npos) {
		++ans;
		pos = s.find(t, pos);
		pos += t.size();
		if (t.size() > 1) --pos;
	}
	if (t.size() == 1 && ans > 0) ans = -1;
	cout << ans << endl;
	return 0;
}