#include<iostream>
#include<cstring>
#include<cmath>
using namespace std;
int main(){
    int n=0,a,b,i,j,c=0;
    string word,sentence;
    cin>>word;
    cin>>sentence;
    b=word.length();
    a=sentence.length();
    for(i=0;i<a;i++){
        if(sentence[i]==' '){
            j=0;
            c=0;
        }else{
            for(j=0;j<b;j++){
                if(word[j]==sentence[i]||word[j]+32==sentence[i]||word[j]-32==sentence[i]){
                    c++;
                }else{
                    j=0;
                    c=0;
                }
                if(j==b-1&&c==b){
                    n++;
                }
            }
        }
        
    }
    if(n==0){
        cout<<-1;
    }else{
        cout<<n<<endl;
    }
    return 0;
    
}