#include <stdio.h> int sum1(int n,int sign){ int sum=0; 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 ",sum1(n,10),sum1(n,16),sum1(n,2)); if( sum1(n,10)==sum1(n,16) && sum1(n,16)==sum1(n,12) ) printf("%d is a Sky Number. ",n); else printf("%d is not a Sky Number. ",n); } return 0; }