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#include <fstream>
using namespace std;
ifstream f("permutari.in");
ofstream g("permutari.out");
int viz[21],v[21],n;
inline void Back(int k)
{
if(k==n+1)
{
for(int i=1;i<=n;i++)
g<<v[i]<<" ";
g<<"\n";
return ;
}
for(int i=1;i<=n;i++)
if(viz[i]==0)
{
v[k]=i;
viz[i]=1;
Back(k+1);
viz[i]=0;
}
}
int main()
{
f>>n;
Back(1);
return 0;
}