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Cod sursa(job #599611)
#include<iostream>
#include<fstream>
using namespace std;
ifstream in("patrate2.in");
ofstream out("patrate2.out");
int n,x[100000];
inline void inm(const int &a) {
int i,t=0;
for(i=1;i<=x[0] || t;++i,t/=10000) {
t+=x[i]*a;
x[i]=t%10000;
}
x[0]=i-1;
}
int main() {
int i,t;
in >> n;
t=n*n; x[0]=x[1]=1;
for(i=1;i<=t;++i)
inm(2);
for(i=2;i<=n;++i)
inm(i);
for(i=x[0];i!=0;--i) {
while(x[i]) {
out << x[i]%10;
x[i]/=10;
}
}
return 0;
}