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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int x[20],fr[20],n,y;
void tipar(int){
for(int i=1;i<=y;i++)
fout<<x[i]<<" ";
fout<<"\n";
}
void Back(int k){
for(int i=x[k-1]+1;i<=n;i++){
x[k]=i;
y=k;
tipar(y);
if(k<n)
Back(k+1);
}
}
int main()
{
fin>>n;
Back(1);
return 0;
}