/*
TASK:man
LANG:C++
*/
# include <iostream.h>
int main ()
{
    int a [555];
    int n;cin >> n;
    for (int i=0;i<n;i++)
    {   for (int j=i;j<n;j++)
    cin >> a[i];}
    cout << "8";
    cout << endl;
    return 0;
}    
    
    
