- import java.util.stream.*; 
-   
- class Ideone { 
- 	public static void-  main  (String[]-  args ) {
 
- 		long-  count  =-  IntStream. generate(() -> (int)(Math- . random() * 20 + 1))- . takeWhile(- i  ->-  i  != 11)- . count();
 
- 	} 
- } 
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