#include<fstream>
#define dim 1001
using namespace std;
int n,a[dim],uz[dim];
 ofstream g("permutari.out");
void gen(int k)
{
    if(k==n+1)
    {
        for(int i=1;i<=n;i++)
            g<<a[i]<<" ";
        g<<"\n";
    }
    else
        for(int i=1;i<=n;i++)
            if(!uz[i])
            {
                a[k]=i;
                uz[i]=1;
                gen(k+1);
                uz[i]=0;
            }
}
int main()
{
    ifstream f("permutari.in");

    f>>n;
    gen(1);
}