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#include <iostream>
#include <fstream>
using namespace std;
ifstream in("submultimi.in");
ofstream out("submultimi.out");
const int maxn = 20;
int v[maxn];
int n;
void _back_(int poz)
{
if(poz <= n)
{
for(int i = v[poz - 1] + 1; i <= n; i++)
{
v[poz] = i;
for(int j = 1; j <= poz; j++)
out << v[j] << " ";
out << "\n";
_back_(poz + 1);
}
}
}
int main()
{
in >> n;
_back_(1);
return 0;
}