#include <bits/stdc++.h>
using namespace std;
struct Node
{
	string s1;
	string s2;
	string s3;
	string s4;
};
Node a[10000 + 5];
int main()
{
	int n, cnt = 0;
	cin >> n;
	for (int i = 1; i <= n; i++)
		cin >> a[i].s1 >> a[i].s2 >> a[i].s3 >> a[i].s4;
	cnt++;
	cout << cnt;
	
	return 0;
}