POJ - 2406 Power Strings

Time Limit: 3000MS		Memory Limit: 65536K
Total Submissions: 58285		Accepted: 24224

Description

Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "abcdef". If we think of concatenation as multiplication, exponentiation by a non-negative integer is defined in the normal way: a^0 = "" (the empty string) and a^(n+1) = a*(a^n).

Input

Each test case is a line of input representing s, a string of printable characters. The length of s will be at least 1 and will not exceed 1 million characters. A line containing a period follows the last test case.

Output

For each s you should print the largest n such that s = a^n for some string a.

Sample Input

abcd
aaaa
ababab
.

Sample Output

1
4
3

Hint

This problem has huge input, use scanf instead of cin to avoid time limit exceed.

Source

Waterloo local 2002.07.01

求字符串中最小的循环节。

如果对于next数组中的 i， 符合 i % ( i - next[i] ) == 0 && next[i] != 0 , 则说明字符串循环，而且

循环节长度为:   i - next[i]

循环次数为:   i / ( i - next[i] )

#include
#include
#include
#include
#include
#include
using namespace std;
#define N 1000000
int next[N],len;
char s[N];
void GetNext(){
	len=strlen(s);
	int i=0,j;
	j=next[0]=-1;
	while(i