#include <iostream>
#include <cmath>
#include <vector>

struct Book {
  int page_count;
  std::string name, color;
};

#include "func.h"

int main(){
  int n; std::cin >> n;
  std::vector<Book> shelf(n);
  for (int i = 0; i < n; ++i) {
    std::cin >> shelf[i].name >> shelf[i].color >> shelf[i].page_count;
  }
  std::cout << green_book_cnt(shelf);
}