Cod sursa(job #554045)

Utilizator ghitzZzaGheorghita Hurmuz ghitzZza Data 14 martie 2011 15:45:05
Problema Dame Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.83 kb
#include <iostream>
#include <cmath>

using namespace std;

int n,m,s[20],x[20];

void retSol(int a)
{
    cout<<"solutia "<< a<<":  ";
    for(int i=0;i<n;++i) cout<<s[x[i]-1]<<" ";
    cout<<endl;
}
int continuare(int k)
{
    for(int i=0;i<k;++i)
        if(x[k]==x[i] || abs((float)k-i)==abs((float)x[k]-x[i])) return 0;
    return 1;
}
void backtracking()
{
    int k=0,nrSol=0,i;

    for(i=0;i<n;i++) x[i]=0;

    while(k>=0)
    {
        if(k==n)
        {
            retSol(++nrSol);
            k--;
        }
        else
        {
            if(x[k]<n)
            {
                x[k]++;
                if(continuare(k)) k++;
            }
            else x[k--]=0;
        }
    }
}

int main()
{
    cin>>n;
    for(int i=0;i<n;++i)s[i]=i+1;
    backtracking();
    return 0;
}