#include <stdio.h>

int main() 
{
    int a;
    scanf("%d",&a);
    if (a>0)
    {
        printf("%d is a positive number",a);
    }
    else if (a<0)
    {
        printf("%d is a negative number",a);
    }    
    else
    {
        printf("%d is neither positive nor negative",a);
    }    
    return 0;
}