poj 2406

 1 #include <stdio.h>
 2 #include <string.h>
 3 const int maxn = 1e6+25;
 4 
 5 char str[maxn];
 6 int next[maxn];
 7 
 8 
 9 void getnext()
10 {
11     int len = strlen(str);
12     int i = 0,j = -1;
13     next[0] = -1;
14     while(i<len)
15     {
16         if(j==-1||str[i]==str[j])
17             next[++i] = ++j;
18         else
19             j = next[j];
20     }
21 }
22 
23 int main()
24 {
25     while(scanf("%s",str),str[0]!=‘.‘)
26     {
27         memset(next,0,sizeof(next));
28         getnext();
29         int ans = 1;
30         int len = strlen(str);
31         if(len%(len-next[len])!=0)
32             printf("1\n");
33         else
34             printf("%d\n",len/(len-next[len]));
35     }
36     return 0;
37 }