/*
TASK:edi
LANG:C++
*/
# include <iostream>
using namespace std;

int n,l,e=0;

void read()
{
     cin>>n;
     for (int i=0;i<n;i++)
         cin>>l;     
}

int main ()
{
    read   ();
    cout<<"0"<<'/n';
 system ("pause");
 return 0;      
}
