#include<iostream>
#include<sstream>
#include<set>
#include<string>
using namespace std;
int main()
{
    string s ;
    while(getline(cin,s)&&s!="#")
    {
        istringstream cin(s);
        set<string>words;
        string w;
        while(cin>>w)
            words.insert(w);
        cout<<words.size()<<endl;
    }
}