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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int N,x[20];
int valid(int k)
{
if(!x[k]>x[k-1])
return 0;
return 1;
}
int solutie(int k)
{
return k<=N;
}
void afisare(int k)
{
for(int i=1;i<=k;++i)
cout<<x[i]<<" ";
cout<<"\n";
}
void Backtrack(int k)
{
for(int i=1;i<=N;++i)
{
x[k]=i;
if(valid(k))
if(solutie(k))
afisare(k);
if(k<=N) Backtrack(k+1);
}
}
int main()
{
cin>>N;
Backtrack(1);
return 0;
}