- import java.util.*; 
- import java.lang.*; 
- import java.io.*; 
- class Ideone 
- { 
- 	{ 
- 		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}*"));
 
- 	} 
- } 
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