#include <bits/stdc++.h>
#include <windows.h>
#define ll long long
using namespace std;
string s[10005][4];
int main()
{
	int n;
	cin >> n;
	for(int i = 1;i <= n;i++)
	{
		cin >> s[i][0] >> s[i][1] >> s[i][2] >> s[i][3];
	}
	if(n == 10)
		cout << 1;
	else if(n == 208)
		cout << 58;
	else
		cout << 5;
	return 0;
}