1 #include <stdio.h>
 2 #include <stdlib.h>
 3 #include <string.h>
 4 
 5 int cmp(const void *a, const void *b)
 6 {
 7     return *(char *)a > *(char *)b ? 1 : -1;
 8 }
 9 int main()
10 {
11     char a[11];
12     while (scanf_s("%s", a, 10) != EOF)
13     {
14         int len = strlen(a);
15         qsort(a, len, 1, cmp);
16         fprintf(stdout, "%s\n", a);
17         loop:while(1)
18         {
19             for (int i = len - 1; i > 0; --i)
20             {
21                 if (a[i - 1] < a[i])
22                 {
23                     for (int j = len - 1;; --j)
24                     {
25                         if (a[j] > a[i - 1])
26                         {
27                             a[10] = a[j];
28                             a[j] = a[i - 1];
29                             a[i - 1] = a[10];
30                             qsort(&a[i], len - i, 1, cmp);
31                             fprintf(stdout, "%s\n", a);
32                             goto loop;
33                         }
34                     }
35                 }
36             }
37             break;
38         };
39     }
40 }