#include <cstdio>
#include <cstring>
#include <iostream>
#include <ostream>
#include <set>

int main(int argc, char* argv[]){
  size_t count = 0;
  char buf[256] = {0};
  std::set<std::string> testset;
  while(fgets(buf, sizeof(buf), stdin)){
    size_t size = strlen(buf);
    if(size && buf[size-1] == '\n')
      size -= 1;
    if(!size) continue;
    const std::string s(buf, size);
    testset.emplace(s);
  }
  std::cerr << "SET Size "<<testset.size() << std::endl;
}