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  1. import java.io.*;
  2. import java.util.*;
  3.  
  4. class p171b
  5. {
  6.     public static void main(String[] args)
  7.     {
  8.         Scanner sc = new Scanner(System.in);
  9.         long a = sc.nextLong();
  10.         long count = 6*a*(a-1)+1;
  11.         System.out.println(count);
  12.     }
  13. }
Success #stdin #stdout 0.1s 380672KB
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https://ideone.com/MejSxL
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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