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#include <iostream>
#include <fstream>
using namespace std;
ifstream in("submultimi.in");
ofstream out("submultimi.out");
int sol[17];
int n;
void afisare(int k)
{
for(int i=1; i<k; i++)
out<<sol[i]<<" ";
out<<endl;
}
void bkt(int p)
{
if(p!=1)
afisare(p);
for(int i=sol[p-1]+1; i<=n; i++)
{
sol[p]=i;
bkt(p+1);
}
}
int main()
{
in>>n;
bkt(1);
return 0;
}