progRom

#include <bits/stdc++.h>
#include <locale.h>
#include <windows.h>
using namespace std;
ifstream fin("text.in");
const static unsigned code = 65001;
set <string> ss;

int main()
{
    setlocale(LC_ALL, "ro");
    SetConsoleOutputCP(code);
    string s;
    while (fin >> s)
    ss.insert(s);

    cout << ss.size();
    return 0;
}