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  1. #include <stdio.h>
  2.  
  3. void main()
  4. {
  5. int input, change, count = 0;
  6. do
  7. {
  8. scanf("%d", &input);
  9. change = input;
  10. } while (input < -1 || input > 100);
  11.  
  12. do
  13. {
  14. int sum = change / 10 + change % 10;
  15. change = (change % 10) * 10 + (sum % 10);
  16. count++;
  17. } while (input != change);
  18.  
  19. printf("%d", count);
  20. }
Runtime error #stdin #stdout 0s 2012KB
stdin
26
stdout
4