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

signed main(void){
  

  string S,T; cin >> S >> T;
  int n = (int)S.size(); int m = (int)T.size();
  
  // m == 1がコーナーケース
  
  if( m == 1 ){ 
      char c = T[0];
    for(int i = 0; i < n; i++){ 
      if( S[i] == c ){ cout << "-1" << endl; return 0;}
    }
    cout << 0 << endl; return 0;
  }
  
  if( n < m ){ cout << 0 << endl; return 0;}
  
  int head = 0; int tail = 0;
  
  int pos = 0; int cnt = 0; 
  
  for(int pos = 0; pos+m <= n; ){
    string test = S.substr(pos,m);
    
    if( test != T ){ pos++; continue;}
    else{
      cnt++; pos = pos+m-1;
    }
  }
  
  cout << cnt << endl;
  
  return 0;
}