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Cod sursa(job #952822)
#include <fstream>
#include <vector>
#include <string>
#include <cmath>
using namespace std;
ifstream f("patrate2.in");
ofstream g("patrate2.out");
const long long bs=1000000000;
int main()
{
int n;
vector<long long> v;
v.push_back(1);
f>>n;
for(int i=0;i<n*n;++i){
long long s=0;
for(size_t j=0;j<v.size();++j){
s+=v[j]*2;
v[j]=s%bs;
s/=bs;
}
while(s){
v.push_back(s%bs);
s/=bs;
}
}
for(int i=1;i<=n;++i){
long long s=0;
for(size_t j=0;j<v.size();++j){
s+=v[j]*i;
v[j]=s%bs;
s/=bs;
}
while(s){
v.push_back(s%bs);
s/=bs;
}
}
for(auto it=v.rbegin();it!=v.rend();it++){
if(it!=v.rbegin())
g<<string(8-int(log10(*it)),'0');
g<<*it;
}
return 0;
}