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#include<iostream>
#include<fstream>
using namespace std;
ifstream fin("patrate2.in");
ofstream fout("patrate2.out");
int n,i,j,h[3200];
void X(int x)
{
int t=0,i;
for(i=1;i<=h[0];i++)
{
h[i]=h[i]*x+t;
t = h[i]/10;
h[i]=h[i]%10;
}
while(t)
{
h[0]++;
h[h[0]]=t%10;
t/=10;
}
}
int main () {
fin>>n;
h[0]=1; h[1]=1;
for(i=1;i<=n;i++) X(i);
for(i=1;i<=(n*n)-n;i++) X(2);
for(i=1;i<=n;i++) X(2);
for(i=h[0];i>=1;i--)
cout<<h[i]; cout<<"\n";
}