POJ2406【KMP-next数组】

关于next的解释原文：点点点

//#include <bits/stdc++.h>
#include<cstdio>
#include<string.h>
#include<algorithm>
using namespace std;

const int N=1e6+10;
char s[N];
int Next[N],len;

void GetNext()
{
    int i=0,j=-1;
    Next[0]=-1;
    while(i<len)
    {
        if(j==-1||s[i]==s[j])
            Next[++i]=++j;
        else
            j=Next[j];
    }
}

int main()
{
    while(~scanf("%s",s))
    {
        if(strcmp(s,".")==0) break;
        len=strlen(s);
        GetNext();
        if(len%(len-Next[len])==0)
            printf("%d
",len/(len-Next[len]));
        else
            printf("%d
",1);
    }
    return 0;
}