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#include<fstream>
using namespace std;
ifstream fi("permutari.in");
ofstream fo("permutari.out");
int N, k, S[100];
void BackTraking(int k)
{
if(k==N)
{
for(int i=1; i<=N; i++) fo << " " << S[i];
fo << '\n';
}
else
{
for(int i=1; i<=N; i++)
{
bool b=1;
for(int j=1; j<=k; j++)
if(S[j]==i) b=0, j=k;
if(b) S[k+1]=i, BackTraking(k+1);
}
}
}
int main()
{
fi >> N;
BackTraking(0);
}