#include<stdio.h>
int main()
{
    int n;
    long long facorial = 1;
    if(scanf("%d",&n)!=1)
    retun 0;
    if(n<0)
    {
        printf("Invalid input");
        return n0;
    }
    else
    {
        for(int i= 1; i<=n; i++)
        factorial*=1;
    }
    printf("%11d",factorial);
    return 0;
}