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Cod sursa(job #417346)
#include<stdio.h>
int n,bc[1003],viz[1003];
char v[1003][1003];
int k,m;
void afis()
{
int i;
for(i=1;i<=n;i++)
printf("%d ",bc[i]);
printf("\n");
}
void back(int poz)
{
int i;
if(poz==n+1)
{
k--;
if(!k)
afis();
return ;
}
for(i=1;i<=n && k;i++)
{
if(viz[i] || v[bc[poz-1]][i])
continue;
viz[i]=1;
bc[poz]=i;
back(poz+1);
viz[i]=0;
}
}
int main()
{
int i,x,y;
freopen("dusman.in","r",stdin);
freopen("dusman.out","w",stdout);
scanf("%d%d%d",&n,&k,&m);
for(i=1;i<=m;i++)
{
scanf("%d%d",&x,&y);
v[x][y]=1;
v[y][x]=1;
}
back(1);
return 0;
}