#include <iostream>
#include <string.h>
#include <string>
#include <stdio.h>
#include <string>
#include <cstdlib>
using namespace std;
	int c, l, z, x, d, i, k, m, b, n,p;
	string a, f, v;
	string e[999];
int main()
{


	n=3;// количество фотболистов


	for (i = 1; i <= n; i++) {
		getline(cin, a);
		a = a + ' ';
		p = a.find_first_of(" ");
		f = a;
		e[i] = f.erase(p);
		a.erase(0, p + 1);
		e[i] += ' ';
		p = a.find_first_of(" ");
		f = a;
		e[i] += f.erase(p);
		a.erase(0, p + 1);
		p = a.find_first_of(" ");
		f = a;
		v = f.erase(p);
		z = atoi(v.c_str());
		a.erase(0, p + 1);
		p = a.find_first_of(" ");
		f = a;
		v = f.erase(p);
		x = atoi(v.c_str());
		a.erase(0, p + 1);
		if ((z <= 1998) && (z >= 1990) && (x == 0)) {
			l++;
		}
		else { e[i] = '\0'; }


	}
	cout << l;

}