#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define nmax 1000007
long long a[nmax];
long long lcm(long long a, long long b)
{
    return a/__gcd(a, b)*b;
}
signed main()
{
    long long n;
    cin >> n;
    long long tich = 1;
    if(n >= 1) tich*=1;
    if(n >= 2) tich*=2;
    if(n >= 3) tich*=3;
    if(n >= 4) tich*=4;
    if(n >= 5) tich*=5;
    if(n >= 6) tich*=6;
    if(n >= 7) tich*=7;
    if(n >= 8) tich*=8;
    if(n >= 9) tich*=9;
    cout << tich;
}

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin>>n;
    unsigned long long kq=1;
    if(n>=1) kq=kq*1;
    if(n>=2) kq=kq*2;
    if(n>=3) kq=kq*3;
    if(n>=4) kq=kq*4;
    if(n>=5) kq=kq*5;
    if(n>=6) kq=kq*6;
    if(n>=7) kq=kq*7;
    if(n>=8) kq=kq*8;
    if(n>=9) kq=kq*9;
    cout<<kq;
    return 0;
}