#include <stdio.h>

int sum1(int n,int sign){

    int sum=;

    while(n){

        sum+=n%sign;

        n/=sign;

    }

    return sum;

}

int main(){

    int n;

    while(~scanf("%d",&n)&&n){

        //printf("10=%d,16=%d,2=%d\n",sum1(n,10),sum1(n,16),sum1(n,2));

        if( sum1(n,)==sum1(n,) && sum1(n,)==sum1(n,) )

            printf("%d is a Sky Number.\n",n);

        else

            printf("%d is not a Sky Number.\n",n);

    }

    return ;

}