/* -*- coding: utf-8 -*-
 *
 * 1005.cc:  No.1005 BOT対策 - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MAX_N = 1000;

/* typedef */

/* global variables */

char s[MAX_N + 4], t[MAX_N + 4];

/* subroutines */

/* main */

int main() {
  scanf("%s%s", s, t);
  int n = strlen(s), m = strlen(t);

  int cnt = 0;
  for (int i = 0; i + m <= n; i++)
    if (! strncmp(s + i, t, m)) {
      if (m == 1) {
	cnt = -1;
	break;
      }
      cnt++;
      s[i + m - 2] = '.';
    }

  printf("%d\n", cnt);
  return 0;
}