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Cod sursa(job #282057)
#include<fstream.h>
int n,k,x[20],v[20];
ifstream fin("combinari.in");
ofstream fout("combinari.out");
void afisare()
{
for(int i=1;i<=k;i++)
fout<<x[i]<<" ";
fout<<"\n";
}
void bkt(int p)
{
int i;
if(p==k+1)
afisare();
else
for(i=1;i<=n;i++)
if(v[i]==0 && x[p-1]<i)
{
x[p]=i;
v[i]=1;
bkt(p+1);
v[i]=0;
}
}
int main()
{
fin>>n>>k;
bkt(1);
return 0;
}