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#include <iostream>
#include <fstream>
using namespace std;
const string filename = "submultimi";
ifstream fin(filename + ".in");
ofstream fout(filename + ".out");
int n, sol[18];
void afis(int k)
{
for(int i = 1; i <= k; i++)
fout << sol[i] << ' ';
fout << '\n';
}
void bkt(int k)
{
for(int i = sol[k - 1] + 1; i <= n; i++)
{
sol[k] = i;
afis(k);
if(k < n)
bkt(k + 1);
}
}
int main()
{
fin >> n;
bkt(1);
return 0;
}