Cod sursa(job #1971495)

Utilizator LizaSzabo Liza Liza Data 20 aprilie 2017 14:46:09
Problema Problema Damelor Scor 90
Compilator cpp Status done
Runda Arhiva educationala Marime 0.99 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("damesah.in");
ofstream fout("damesah.out");
const int Nmax=14;
int N,D[Nmax*2],V[Nmax],j,nr,Use[Nmax],L[Nmax],C[Nmax*2];

bool OK(int i)
{
    if((D[i+V[i]+1]==0)&&(Use[V[i]]==0)&&(C[i-V[i]+N]==0))
    {
        Use[V[i]]=1;
        C[i-V[i]+N]=1;
        D[i+V[i]+1]=1;
        return 1;
    }
    else return 0;
}

void Back(int i)
{
    for(int j=1;j<=N;++j)
    {
        V[i]=j;
        if(OK(i))
        {
            if(i==N)
            {
                nr++;
                if(nr==1)
                for(int k=1;k<=N;++k)
                {

                    L[k]=V[k];
                }

            }
else{
            Back(i+1);}
            D[i+j+1]=0;
            C[i-V[i]+N]=0;
            Use[j]=0;

        }
    }
}

int main()
{
    fin>>N;
    Back(1);
    for(int i=1;i<=N;++i)
    {
        fout<<L[i]<<" ";
    }
     fout<<"\n"<<nr<<"\n";
    return 0;
}