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Cod sursa(job #370321)
#include<fstream.h>
int n,k,m,i,x[1001],z,y,t,ok,nr,v[1001];
char a[1001][1001];
int main()
{
ifstream f("dusman.in");
ofstream g("dusman.out");
f>>n>>k>>m;
for(i=1;i<=m;i++)
{
f>>z>>y;
a[z][y]=a[y][z]=1;
}
int q=1;
t=1;
while(t&&q)
{
x[t]++;
ok=0;
while(!ok)
{
ok=1;
if(v[x[t]]||a[x[t-1]][x[t]])ok=0;
if(!ok)x[t]++;
if(x[t]>n)break;
}
if(x[t]>n){t--;v[x[t]]=0;}
else
if(t==n)
{
nr++;
if(k==nr){
for(i=1;i<=n;i++)g<<x[i]<<' ';t=0;}
t--;
v[x[t]]=0;
}
else
{
v[x[t]]=1;
t++;
x[t]=0;
}
}
return 0;
}