Cod sursa(job #2957690)
Utilizator | Data | 23 decembrie 2022 12:31:39 | |
---|---|---|---|
Problema | Problema Damelor | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 1.01 kb |
#include <fstream>
using namespace std;
ifstream fin ("damesah.in");
ofstream fout ("damesah.out");
int x[14],ok,n,nrc,f[14];
int vv (int pas)
{
for (int i=1; i<pas; i++)
{
int nr1,nr2;
nr1=pas-i;
if (nr1<0)
nr1=nr1*(-1);
nr2=x[pas]-x[i];
if (nr2<0)
nr2=nr2*(-1);
if (nr1==nr2)
return 0;
}
return 1;
}
void backtrack (int pas)
{
if (pas==n+1)
{
nrc++;
if (ok==0)
{
ok=1;
for (int i=1; i<=n; i++)
fout<<x[i]<<" ";
fout<<"\n";
}
}
else
{
for (int i=1; i<=n; i++)
{
if (f[i]==0)
{
x[pas]=i;
f[i]=1;
if (vv(pas)==1)
backtrack (pas+1);
f[i]=0;
}
}
}
}
int main()
{
fin>>n;
backtrack (1);
fout<<nrc;
return 0;
}