Pagini recente » infoarena - comunitate informatica, concursuri de programare | Cod sursa (job #2845299) | Cod sursa (job #1711395) | Cod sursa (job #2644081) | Cod sursa (job #1226505)
#include <fstream>
using namespace std;
ifstream f("damesah.in");
ofstream g("damesah.out");
int n,j,v[15],l,i;
bool valid[15][15],ok;
void bt(int i)
{
int j,z,d;
if (i==n+1)
{
if (ok==false)
for (j=1;j<=n;j++)
g<<v[j]<<' ',ok=true;
l++;
}
else
for (j=1;j<=n;j++)
if (valid[i][j])
{
v[i]=j;
for (z=i+1;z<=n;z++)
valid[z][j]=false;
for (z=i+1,d=j+1;z<=n && d<=n;z++,d++)
valid[z][d]=false;
for (z=i+1,d=j-1;z<=n && d>=1;z++,d--)
valid[z][d]=false;
bt(i+1);
for (z=i+1;z<=n;z++)
valid[z][j]=true;
for (z=i+1,d=j+1;z<=n && d<=n;z++,d++)
valid[z][d]=true;
for (z=i+1,d=j-1;z<=n && d>=1;z++,d--)
valid[z][d]=true;
}
}
int main()
{
f>>n;
for (i=1;i<=n;i++)
for (j=1;j<=n;j++)
valid[i][j]=true;
bt(1);
g<<'\n'<<l;
return 0;
}