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#include <iostream>
#include <fstream>
using namespace std;
ifstream f ("submultimi.in");
ofstream g ("submultimi.out");
int n,fr[20],a[20];
void afisare(int nivel)
{
for(int i=1;i<=nivel;i++)
g<<a[i]<<" ";
g<<"\n";
}
void Back(int nivel)
{
for(int i=1;i<=n;i++)
{
if(fr[i]==0 && i>a[nivel-1])
{
fr[i]++;
a[nivel]=i;
Back(nivel+1);
fr[i]=0;
afisare(nivel);
}
}
}
int main()
{
f>>n;
Back(1);
return 0;
}