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#include <fstream>
using namespace std;
ifstream in("submultimi.in");
ofstream out("submultimi.out");
int n,x[100],m;
void afisare(int k)
{
int i;
for(i=1;i<=k;i++)
out<<x[i]<<" ";
out<<'\n';
}
void back(int k)
{
int i;
for(i=x[k-1]+1;i<=n;i++)
{
x[k]=i;
if(k==m)
afisare(k);
else
back(k+1);
}
}
int main()
{
in>>n;
for(m=1;m<=n;m++)
back(1);
return 0;
}