Power Strings

 1 #include<bits/stdc++.h>
 2 using namespace std;
 3 #define MAXN 1000017
 4 int Next[MAXN];
 5 int len;
 6 void getNext( char T[])
 7 {
 8     int i = 0, j = -1;
 9     Next[0] = -1;
10     while(i <len)
11     {
12         if(j == -1 || T[i] == T[j])
13         {
14             i++,j++;
15             Next[i] = j;
16         }
17         else
18             j = Next[j];
19     }
20 }
21 
22 int main()
23 {
24     char ss[MAXN];
25     int length;
26     while(cin >> ss)
27     {
28         if(ss[0] == ‘.‘)
29             break;
30         len = strlen(ss);
31         getNext(ss);
32         length = len - Next[len];
33         if(len%length == 0)
34             cout << len/length << endl;
35         else
36             cout << "1" << endl;
37     }
38     return 0;
39 }