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#include<fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int i,j,n,m,nr,sol,q,ok;
int v[100];
int cont(int x,int pas){
int ok=0;
for(int i=1;i<pas;i++){
if(v[i]==x){
ok=1;
break;
}
}
return ok;
}
void backl(int pas){
for(int i=v[pas-1]+1;i<=n;i++){
if(cont(i,pas)==0){
v[pas]=i;
for(int j=1;j<=pas;j++){
fout<<v[j]<<" ";
}
fout<<"\n";
backl(pas+1);
}
}
}
int main(){
fin>>n;
backl(1);
return 0;
}