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#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n;
int v[20];
bool valid(int m){
for(int i = 1; i<m; ++i){
if(v[i]>=v[m]) return false;
}
return true;
}
void afisare(int k){
for(int i = 1; i<=k; ++i){
fout<<v[i]<<' ';
}
fout<<'\n';
}
void combinari(int m, int k){
for(int i = 1; i<=n; ++i){
v[m] = i;
if(valid(m)){
if(m==k) afisare(k);
else combinari(m+1,k);
}
}
}
int main()
{
fin>>n;
for(int i = 1; i<=n; ++i) combinari(1,i);
return 0;
}