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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. int main() {
  5.  
  6. 	long long int t, i = 0;
  7. 	long int alpha[26] = { 0 }, value, test = 0, flag = 0, count = 0, max = 0,
  8. 			j = 0, pos = 0, prevpos = 0;
  9. 	char str[100000];
  10.  
  11. 	scanf("%lld", &t);
  12. 	while (t--) {
  13.  
  14. 		for (i = 0; i < 25; i++)
  15. 			alpha[i] = 0;
  16.  
  17. 		flag = 0;
  18. 		scanf("%s", str);
  19. 		i = 0;
  20. 		while (str[i] != '\0') {
  21. 			value = str[i] - 97;
  22. 			//printf("%d", value);
  23. 			alpha[value]++;
  24. 			i++;
  25. 		}
  26.  
  27. 		count = i;
  28. 		if (i % 2 == 0)
  29. 			test = i / 2;
  30. 		else
  31. 			test = i / 2 + 1;
  32.  
  33. 		for (i = 0; i < 25; i++) {
  34. 			if (alpha[i] > test) {
  35. 				printf("-1\n");
  36. 				flag = 1;
  37. 				break;
  38.  
  39. 			}
  40. 		}
  41. 		if (flag == 0) {
  42.  
  43. 			prevpos = 100;
  44. 			pos = 0;
  45. 			while (count--) {
  46. 				max = 0;
  47. 				for (j = 0; j < 26; j++) {
  48. 					if (max < alpha[j] && prevpos != j) {
  49. 						max = alpha[j];
  50. 						pos = j;
  51. 					}
  52. 				}
  53. 				prevpos = pos;
  54. 				alpha[pos]--;
  55. 				printf("%c", pos + 97);
  56.  
  57. 			}
  58. 			printf("\n");
  59. 		}
  60.  
  61. 	}
  62. 	return 0;
  63. }
  64.  
  65.  
Success #stdin #stdout 0s 2032KB
comments (?)
stdin
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1
aaabbbcccccc
stdout
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cacbcacbcabc
https://ideone.com/sgTUs4
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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