main()
{

        int a[30];
        int i=0;
        for(i=0; i<30; i++)
                a[i]=i;
        for(i=0; i<30;i++)
        {
                if(!(a[i] & a[i-1]))
                printf("%d is power of 2\n",a[i]);
                else
                printf("%d is not a power of 2\n",a[i]);
        }



}