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#include<fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n,x[100];
void afis(int k){
int i;
for (i=1;i<=k-1;i++)
fout<<x[i]<<" ";
fout<<'\n';
}
void backt(int k){
int i;
if (k>=2) afis(k);
for (i=x[k-1]+1;i<=n;i++){
x[k]=i;
backt(k+1);
}
}
int main(){
fin>>n;
fin.close();
x[0]=0;
backt(1);
fout.close();
return 0;
}