#include <iostream>
#include <string>
#include <sstream>
#include <set>

using namespace std;

string str;
set<string> st;

int main()
{
    while (getline(cin, str) && str[0] != '#')
    {
        st.clear();
        istringstream is(str);
        string sub;
        while (is >> sub)
        {
            st.insert(sub);
        }
        cout << st.size() << endl;
    }
    return 0;
}