用这个代码可以AC，但是00000之类的情况就会判断错误
#include<iostream>
#include<stdio.h>
#include<cstring>
#include<cmath>
#include<string>
#include<stack>
#include<queue>
#include<algorithm>
using namespace std;

int main()
{ 
string king; 
 while(cin>>king)
 {

	
  int queen=king.length();
   int temp=0;
   bool res=true;
   int mul=queen+1;
    for (int i=queen-1;i>=0;i--)
     {
	   int result=(king[i]-'0')*mul+temp;
	   int single=result-(result/10)*10;
	   result-=single;
	   
	   if (single!=9)
	    {
		 res=false;
		 break; 
		} 
	  temp=result;
	  temp/=10;
	 }
	 while(temp!=0)
	 {
	  int single=temp%10;
	   if(single!=9)
	    {
	      res=false;
	      break;
	    }
	 temp/=10;
	 }
  
	 if (res)
	cout<<king<<" is cyclic"<<endl;
	 else 
	cout<<king<<" is not cyclic"<<endl;
 }
    
}