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Cod sursa(job #159332)
#include<fstream.h>
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int a[20],c;
void back(int n,int k);
int main()
{
int n;
fin>>n>>c;
back(n-c+1,1);
fin.close();
fout.close();
return 0;
}
void back(int n,int k)
{
int i;
if(k>c)
{
for(i=1;i<=c;i++)
fout<<a[i]<<' ';
fout<<'\n';
}
else
for(i=1;i<=n;i++)
{
a[k]=i;
if(a[k]>a[k-1] && k!=1)
back(n+1,k+1);
else
if(k==1)
back(n+1,k+1);
}
}