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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n;
  6. 	cin >> n;
  7. 	if (n < 10) {
  8. 		cout << "nu este demn";
  9. 	} else if (n < 1000) {
  10. 		cout << n;
  11. 	} else {
  12. 		int number_n;
  13. 		number_n = n;
  14. 		int penultimate_number, curent_number, counter_i = 0;
  15. 		while (number_n > 9) {
  16. 			curent_number = number_n % 10;
  17. 			counter_i++;
  18. 			if (counter_i == 2) {
  19. 				penultimate_number = curent_number;
  20. 			}
  21. 			number_n /= 10;
  22. 		}
  23. 		int second_number;
  24. 		second_number = curent_number;
  25. 		counter_i++;
  26. 		number_n = n;
  27. 		int counter_j = 0, ten_powers = 1, rezult = 0;
  28. 		while (counter_j <= counter_i) {
  29. 			curent_number = number_n % 10;
  30. 			counter_j++;
  31. 			if (counter_j == 2) {
  32. 				curent_number = second_number;
  33. 			}
  34. 			if (counter_j == counter_i - 1) {
  35. 				curent_number = penultimate_number;
  36. 			}
  37. 			rezult += curent_number * ten_powers;
  38. 			ten_powers *= 10;
  39. 			number_n /= 10;
  40. 	    }
  41. 		cout << rezult;
  42. 	}
  43.     return 0;
  44. }
Success #stdin #stdout 0.01s 5700KB
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https://ideone.com/xYo2S4
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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