Cod sursa(job #986161)

Utilizator dariusdariusMarian Darius dariusdarius Data 17 august 2013 22:32:07
Problema Dusman Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.8 kb
#include<cstdio>
#include<algorithm>
using namespace std;
bool viz[1005],a[1005][1005];int n,k,nr,st[1005];
void backt(int lvl)
{
    if(lvl==n+1)
    {
        nr++;
        if(nr==k)
        {
            for(int i=1;i<=n;i++)
                printf("%d%c",st[i],i==n?'\n':' ');
        }
        return;
    }
    for(int i=1;i<=n;i++)
        if(!viz[i] && (lvl==1 || !a[st[lvl-1]][i]))
        {
            viz[i]=true;st[lvl]=i;
            backt(lvl+1);
            if(nr==k) return;
            viz[i]=false;st[lvl]=0;
        }
}
int main()
{
    freopen("dusman.in","r",stdin);
    freopen("dusman.out","w",stdout);
    int m,x,y;
    scanf("%d%d%d",&n,&k,&m);
    for(int i=1;i<=m;i++)
        scanf("%d%d",&x,&y),
        a[x][y]=a[y][x]=true;
    backt(1);
    return 0;
}