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Sep 23rd, 2019
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  1. string s;
  2. cin >> s;
  3. int i = 0;
  4. while (s[i] == '5' && i < s.size())
  5. {
  6. i++;
  7. }
  8. if (i == s.size())
  9. {
  10. for (int j = 0; j < s.size() + 1; j++)
  11. {
  12. cout << 5;
  13.  
  14. }
  15. exit(0);
  16. }
  17. if (s[i] < '5')
  18. {
  19. for (int j = 0; j < s.size(); j++)
  20. {
  21. cout << 5;
  22. }
  23. exit(0);
  24. }
  25. for (int j = 0; j < s.size() + 1; j++)
  26. {
  27. cout << 5;
  28. }
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