lucky number（hdu 3346）

#include<stdio.h>
int g(int n){
return(n&7) == 0;
}
int f(int n){
if(g(n)){
return 1;
}
int r = 0, s= 0, t;
while (n> 0){
t = n;
r += t;
s += t*t;
n /= 10;
}
return g(r)|| g(s);
}
int main(){
int z,n;
scanf("%d",&z);
while(z--){
scanf("%d",&n);
printf("%s\n", f(n) ? "Lucky number!" : "What a pity!");
}
return0;
}