HDU 2097

#include<stdio.h>
int main()
{
int s1,s2,s3,a1,a2,a3,a;
while(~scanf("%d",&a)&&a)
{
a1=a2=a3=a;s1=s2=s3=0;
while(a1)   //不断的利用除k取余发，再相加然后比较是否相等就可以了； 
{
s1=a1%10+s1;
a1=a1/10;
}
while(a2)
{
s2=a2%12+s2;
a2=a2/12;
}
while(a3)
{
s3=a3%16+s3;
a3=a3/16;
}
if(s1==s2&&s1==s3&&s2==s3)
printf("%d is a Sky Number.\n",a);
else
printf("%d is not a Sky Number.\n",a);
}
return 0;
}