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  1. package com.javarush.task.task04.task0412;
  2.  
  3. /*
  4. Положительное и отрицательное число
  5. */
  6.  
  7. import java.io.*;
  8.  
  9. public class Solution {
  10. public static void main(String[] args) throws Exception {
  11. //напишите тут ваш код
  12. BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
  13. String A = reader.readLine();
  14. int B = Integer.parseInt(A);
  15.  
  16. if (B > 0) {
  17. System.out.println(B*2);
  18. }
  19. else if (B < 0) {
  20. System.out.println(B+1);
  21. }
  22. else if (B == 0) {
  23. System.out.println(B);
  24. }
  25.  
  26. }
  27.  
  28. }
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