# include <bits/stdc++.h>
using namespace std ;
int main ()
{
	freopen ( "assign.in" , "r" , stdin ) ;
	freopen ( "assign.out" , "w" , stdout ) ; 
	ios :: sync_with_stdio ( 0 ) ;
	cin . tie ( 0 ) ;
	cout . tie ( 0 ) ;
	cout << 0 ;	
	return 0 ;
}
