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