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