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#include <bits/stdc++.h>
#define N 500005
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n;
int x[30];
void Read()
{
fin>>n;
fin.close();
}
void Write(int k);
void Back(int k)
{
for(int i=x[k-1]+1;i<=n;i++)
{
x[k]=i;
Write(k);
if(k<n) Back(k+1);
}
}
void Write(int k)
{
for(int i=1;i<=k;i++) fout<<x[i]<<" ";
fout<<"\n";
}
int main()
{ Read();
Back(1);
return 0;
}