#include <fstream>
#include <string>
#define DIM 2<<15
int a[DIM],n,c[DIM],b[DIM];
long long m;
using namespace std;
ifstream fin("patrate2.in");
ofstream fout("patrate2.out");
void mul(int A[], int B)
{
      int i, t = 0;
      for (i = 1; i <= A[0] || t; i++, t /= 10)
              A[i] = (t += A[i] * B) % 10;
      A[0] = i - 1;
}
void mula(int A[], int B[])
{
      int i, j, t, C[10000];
      memset(C, 0, sizeof(C));
      for (i = 1; i <= A[0]; i++)
      {
              for (t=0, j=1; j <= B[0] || t; j++, t/=10)
                      C[i+j-1]=(t+=C[i+j-1]+A[i]*B[j])%10;
              if (i + j - 2 > C[0]) C[0] = i + j - 2;
      }
      memcpy(A, C, sizeof(C));
}

void solve()
{   
    int i;
    a[0]=1;a[1]=1;
    for (i=2; i<=n; ++i) mul(a,i);
    m=n*n;
    b[0]=1;b[1]=1;
    c[0]=1;c[1]=2;
    while (m)
	{
		if (m%2)
			mula(b,c);
		mula(c,c);
		m/=2;
	}

    mula(a,b);
    for (i=a[0]; i>=1; --i) fout<<a[i];
}    
int main()
{   
    fin>>n;
    solve();
    return 0;
}