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#include <iostream>
#include <fstream>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
int n, x[16];
void afis(int k)
{
for(int i = 1; i <= k; i++)
g << x[i] << ' ';
g<<endl;
}
void bt(int k)
{
for(int i = x[k - 1] + 1; i <= n; i++)
{
x[k] = i;
afis(k);
bt(k + 1);
}
}
int main()
{
f >> n;
bt(1);
f.close();
g.close();
return 0;
}