#include
int main()
{
    int N,i,fact=1;
    scanf("%d",&N);
    printf("%d! = ",N);
    for(i=N;i>=1;i--)
    {
        printf("%d ",i);
        if(i!=1)
            printf("X ");
        fact*=i;
    }
    printf("= %d",fact);
    return 0;
}