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#include <iostream>
#include <fstream>
#include <cmath>
#define N 65535
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n, x[17];
void afisare(int k)
{
for (int i = 1; i <= k; i++)
fout << x[i] << ' ';
fout << '\n';
}
void back(int k)
{
for (int i = x[k - 1] + 1; i <= n; i++)
{
x[k] = i;
afisare(k);
if (x[k] < n)
back(k + 1);
}
}
int main()
{
fin >> n;
back(1);
return 0;
}