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#include <fstream>
using namespace std;
ifstream fin ("submultimi.in");
ofstream fout ("submultimi.out");
int n, x[20];
inline void print (int k){
int i;
for (i=1; i<=k; i++){
fout << x[i] << " ";
}
fout << "\n";
}
inline void bkt (int k){
int i;
for (i=x[k-1]+1; i<=n; i++){
x[k] = i;
print (k);
bkt (k+1);
}
}
int main(){
fin >> n;
bkt(1);
return 0;
}
//recapitulare