import java.util.*;
import java.lang.*;
import java.io.*;
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println("6660".matches("(?!666)\\p{Alnum}*"));
		System.out.println("66600abc".matches("(?!666)\\p{Alnum}*"));
		System.out.println("606asdfnh".matches("(?!666)\\p{Alnum}*"));
		System.out.println("600asdfasdf".matches("(?!666)\\p{Alnum}*"));
	}
}