1016

#include <stdio.h>

#include <string.h>

int main(void)

{

    char buf[16][85];

    char status;

    int i,j;

    char* p;

    while(scanf("%s",buf[0])&&buf[0][0]!='-')

    {

        status = 0;

        for(i=0;i<15&&status==0;++i)

        {

            unsigned char num_time[10]={0};

            for(p=buf[i];p[0]!='\0';++p)

            {

                ++num_time[p[0]-'0'];

            }

            for(p=buf[i+1],j=0;j<10;++j)

            {

                if(num_time[j]>9)

                {

                    p++[0] = j+'0';

                    p++[0] = num_time[j]/10+'0';

                    p++[0] = num_time[j]%10+'0';

                }else if(num_time[j]>0)

                {

                    p++[0] = j+'0';

                    p++[0] = num_time[j]+'0';

                }

            }

            p[0]='\0';

            //检测是否有相同的

            for(j=i;j>=0;--j)

            {

                if(strcmp(buf[j],buf[i+1]) == 0)

                {

                    status = 1;

                    break;

                }

            }

        }

        if(status == 0)

        {

            printf("%s can not be classified after 15 iterations\n",buf[0]);

        }else if(i==1||(i==2&&j==1))

        {

            printf("%s is self-inventorying\n",buf[0]);

        }else if(j+1==i)

        {

            printf("%s is self-inventorying after %d steps\n",buf[0],i-1);

        }else

        {

            printf("%s enters an inventory loop of length %d\n",buf[0],i-j);

        }

    }

}