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  1. #include <iostream>
  2. #include <cstring>
  3. using namespace std;
  4.  
  5. const int MAX_SIZE = 100;
  6.  
  7. void copySmaller(char lexicoSmall[], char text[]) {
  8.     if (strlen(lexicoSmall) == 0 || strcmp(lexicoSmall, text) > 0) {
  9.         strcpy(lexicoSmall, text);
  10.     }
  11. }
  12.  
  13. bool haveDistinctLetters(char text[]) {
  14. 	const int MAX_SIZE = (int)'z';
  15. 	int textLen = strlen(text), fr[MAX_SIZE + 1] = {0};
  16. 	for (int i = 0; i < textLen; ++i) {
  17. 		++fr[(int)text[i]];
  18. 		if (fr[(int)text[i]] > 1) {
  19. 			return false;
  20. 		}
  21. 	}
  22. 	return true;
  23. }
  24.  
  25. void findLargerDistinct(char lexicoLarge[], char text[]) {
  26.     if (haveDistinctLetters(text) && (strlen(lexicoLarge) == 0 || strcmp(lexicoLarge, text) < 0)) {
  27.         strcpy(lexicoLarge, text);
  28.     }
  29. }
  30.  
  31. int main() {
  32.     char text[MAX_SIZE + 1], lexicoSmall[MAX_SIZE + 1] = "", lexicoLarge[MAX_SIZE + 1] = "";
  33.     while (cin >> text) {
  34.         copySmaller(lexicoSmall, text);
  35.         findLargerDistinct(lexicoLarge, text);
  36.     }
  37.     if (strlen(lexicoLarge)) {
  38.         cout << lexicoLarge;        
  39.     } else {
  40.         cout << lexicoSmall;
  41.     }
  42.     return 0;
  43. }
Success #stdin #stdout 0.01s 5268KB
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https://ideone.com/F5JiES
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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