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#include <fstream>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
int N, used[20], st[20], K;
void afisare(int top)
{
for (int i=1; i<=top; ++i)
g<<st[i]<<' '; g<<'\n';
}
void back(int top)
{
for (int i=st[top-1]+1; i<=N; ++i)
if (!used[i])
{
st[top]=i; used[i]=1;
afisare(top); back(top+1);
used[i]=0;
}
}
int main()
{
f>>N;
back(1);
return 0;
}