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