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#include <fstream>
using namespace std;
int n,sol[9];
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
void afisare(int l){
for(int i=1;i<=l;i++)
fout<<sol[i]<<" ";
if(l) fout<<'\n';
}
void bk(int l){
if( l > n) return;
for(int i=1;i<=n;i++){
if(l==1 || i > sol[l-1]){
sol[l] = i;
afisare(l);
bk(l+1);
}
}
}
int main(){
fin>>n;
bk(1);
return 0;
}