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#include <fstream>
using namespace std;
int v[10001];
void build_sol(int a,int v[])
{
int i,r=0;
for(i=1;i<=v[0];i++)
{
r=r+v[i]*a;
v[i]=r%10;
r=r/10;
}
while(r!=0)
{
v[i]=r%10;
r=r/10;
i++;
}
v[0]=i-1;
}
int main()
{
ifstream f("patrate2.in");
ofstream g("patrate2.out");
int n,i;
f>>n;
v[0]=1;
v[1]=1;
for(i=1;i<=n*n;i++)
build_sol(2,v);
for(i=2;i<=n;i++)
build_sol(i,v);
for(i=v[0];i>=1;i--)
g<<v[i];
return 0;
}