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