#include <stdio.h>


int main()
{
    int n;

    do
    {
        printf("Nhap n = ");
        scanf("%d", &n);
        if(n <= 0)
            printf("Dieu kien : n > 0. Hay nhap lai.\n");
    }while(n <= 0);

    int temp = n;
    while(!(temp % 2))
        temp /= 2;

    printf(temp == 1 ? "%d la so mu cua 2" : "%d khong phai la so mu cua 2", n, n);
    return 0;
}