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#include <fstream>
using namespace std;
ifstream f("permutari.in");
ofstream g("permutari.out");
int n,k,x[20];
void bkt(int,int);
int main()
{
f>>n;
bkt(1,0);
return 0;
}
void bkt(int p,int k)
{
int i;
if(p==n+1)
{
if(k==0)return;
for(i=1;i<=n;i++)
if(x[i])g<<i<<' ';
g<<'\n';
return;
}
x[p]=0;bkt(p+1,k);
x[p]=1;bkt(p+1,k+1);
}