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#include <fstream>
using namespace std;
int n, v[20];
ifstream fin ("submultimi.in");
ofstream fout ("submultimi.out");
void afis (int pas)
{
for (int i=1;i<=pas;i++)
fout<<v[i]<<" ";
fout<<"\n";
}
int cont (int pas)
{
for (int i=1;i<pas;i++)
if (v[i]==v[pas])
return 0;
return 1;
}
void rec (int pas)
{
for (int i=v[pas-1]+1;i<=n;i++) {
v[pas]=i;
if (pas<=n && cont(pas)) {
afis(pas);
rec(pas+1);
}
}
}
int main () {
fin>>n;
rec(1);
return 0;
}