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#include <bits/stdc++.h>
using namespace std;
ifstream fin("damesah.in");
ofstream fout("damesah.out");
int n,v[15],ok;
bool validare(int k)
{
int i;
for(i=1; i<k; i++)
{
if(v[k]==v[i])
return 0;
if(abs(v[k]-v[i])==abs(k-i))
return 0;
}
return 1;
}
bool solutie(int k)
{
if(k==n)
return 1;
return 0;
}
void bk (int k)
{
int i,j;
for(i=1; i<=n; i++)
{
v[k]=i;
if(validare(k)==1)
{
if(solutie(k)==1)
{
if(ok==0)
{
for(j=1; j<=n; j++)
fout<<v[j]<<" ";
fout<<'\n';
}
ok++;
}
else
bk(k+1);
}
}
}
int main()
{
fin>>n;
bk(1);
fout<<ok;
return 0;
}