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#include <fstream>
using namespace std;
ifstream cin("submultimi.in");
ofstream cout("submultimi.out");
int X[20],k,n,m;
void tipar(int k){
int j;
for(j=1;j<=k;j++)
cout<<X[j]<<" ";
cout<<'\n';
}
void submult(int k){
int i;
for(i=X[k-1]+1;i<=n;i++){
X[k]=i;
tipar(k);
if(k<n)
submult(k+1);
}
}
int main()
{
cin>>n;
X[0]=0;
submult(1);
return 0;
}