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  1. import java.util.TreeSet;
  2.  
  3. public class Main {
  4.     public static void main(String[] args) {
  5.         TreeSet<String> res = new TreeSet<>();
  6.         for(int i = 0; i < 99999; ++i) {
  7.             String s = Integer.toString(i);
  8.             if (s.contains("23") && s.contains("37")) {
  9.                 res.add(s);
  10.             }
  11.         }
  12.         System.out.println(res.size());
  13.     }
  14. }
  15.  
Success #stdin #stdout 0.13s 2184192KB
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stdout 
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https://ideone.com/rc7wyQ
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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