[xjoi1898] [hdu4333]Revolving Digits

#include<cstdio>
#include<cstring>
using namespace std;
char s1[1000100],s2[1000100];
int ex[1000100],nxt[1000100],nex[1000100];
void get(char *s2){
    int m=strlen(s2);
    nex[0]=nex[1]=0;int j=0;
    for(int i=1;i<m;i++){
        while(j>0&&s2[i]!=s2[j])j=nex[j];
        if(s2[i]==s2[j])j++;
        nex[i+1]=j;
    }
}
void getex(char *s2){
    int j=0,n=strlen(s2);
    while(j+1<n&&s2[j+1]==s2[j])j++;
    nxt[0]=n;nxt[1]=j;int po=1,p=nxt[1]+1;
    for(int i=2;i<n;i++){
        int len=nxt[i-po];
        if(len+i<p)nxt[i]=len;
        else{
            int j=p-i;
            if(j<0)j=0;
            while(i+j<n&&s2[j]==s2[j+i])j++;
            nxt[i]=j;
            po=i;
            p=nxt[po]+po;
        }
    }
}
void exkmp(char *s1,char *s2){
    int j=0,n=strlen(s1),m=strlen(s2);
    while(s1[j]==s2[j]&&j<n&&j<m)j++;
    ex[0]=j;int po=0,p=ex[0];
    for(int i=1;i<n;i++){
        int len=nxt[i-po];
        if(len+i<p)ex[i]=len;
        else{
            int j=p-i;
            while(i+j<n&&j<m&&s1[j+i]==s2[j])j++;
            ex[i]=j;
            po=i;
            p=ex[po]+po;
        }
    }
}
int main(){
    scanf("%s",s2);int len=strlen(s2);
    for(int i=0;i<len;i++)
    s1[i]=s2[i],s1[i+len]=s2[i];
    getex(s2);
    exkmp(s1,s2);
    get(s2);
    
    int temp=len%(len-nex[len])==0?len/(len-nex[len]):1;
    int a=0,b=0,c=0;
    for(int i=0;i<len;i++){
        if(ex[i]>=len)b++;
        else if(s1[i+ex[i]]<s2[ex[i]])a++;
        else c++;
    }
    printf("%d %d %d",a/temp,b/temp,c/temp);
}