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Cod sursa(job #731283)
#include <stdio.h>
#include <string.h>
using namespace std;
int n, x[1000];
inline void inm(const int &a)
{
int i,p=0;
for(i=1;i<=x[0] || p;++i,p/=10000)
{
p+=x[i]*a;
x[i]=p%10000;
}
x[0]=i-1;
}
int main()
{
int i, p;
freopen("patrate2.in","r",stdin);
freopen("patrate2.out","w",stdout);
scanf("%d", &n);
p=n*n;
x[0]=x[1]=1;
for(i=1;i<=p;++i)
inm(2);
for(i=2;i<=n;++i)
inm(i);
for(i=x[0];i!=0;--i)
{
printf("%d",x[i]);
}
return 0;
}