#include <fstream>
#include <cstring>
using namespace std;
ifstream f("patrate2.in");
ofstream g("patrate2.out");
int Fact[100005],Power2[100005];
int N;
void mulLess(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 mulLarge(int A[], int B[])
{
      int i, j, t, C[100005];
      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;
    Fact[0]=Fact[1]=1;
    for(i=2;i<=N;i++)
        mulLess(Fact,i);
    Power2[0]=Power2[1]=1;
    for(i=1;i<=N*N;i++)
        mulLess(Power2,2);
    mulLarge(Fact,Power2);
    for(i=Fact[0];i>=1;i--)
        g<<Fact[i];
}
int main()
{
    f>>N;
    Solve();
    return 0;
}