> #include<stdio.h>
> 
> int main ()
> {
> 	int t[10000] , i , n , pre ,npre , temp , time ,tt ;
> 	scanf ( "%d",&n );
> 	i = 0 ;
> 	while ( n-- )
> 	{
> 		scanf ( "%d%d",&temp,&npre );
> 		tt =  0 ;
> 		while ( npre-- > 0 )
> 		{
> 			scanf ( "%d",&pre ) ;
> 			if ( tt < t[pre] )
> 				tt = t[pre] ;
> 		}
> 		t[++i] = temp + tt ;
> 		if ( time < t[i] )
> 			time = t[i] ;
> 	}
> 	printf ( "%d\n",time );
> 	return 0 ;
> }