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#include <fstream>
#include <vector>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
vector<int> x;
void bkt(int n,int ramas)
{
if(!x.empty())
{
for(int i=0; i<x.size(); i++)
{
g<<x[i]<<" ";
}
g<<'\n';
ramas=x.back()+1;
}
for(int i=ramas; i<=n; i++)
{
x.push_back(i);
bkt(n,ramas);
x.pop_back();
}
}
int main()
{
int n;
f>>n;
bkt(n,1);
return 0;
}