#2999 submultimi_2

#include <iostream>

using namespace std;

int main()

{

   int n,k,r,line,sk, sr, primulk, ultimulk, cardpar, primulr,ultimulr;

   cin >> n >> k >> r;

   cardpar=n/2;

   if (k%2==0) primulk=(k/2)*(k-1);

   else primulk=((k-1)/2)*k;

   ultimulk=(k-1)+primulk;

   if (k%2==0)

       sk=(k/2)*(primulk+ultimulk);

   else sk=((primulk+ultimulk)/2)*k;

   if (r%2==0) primulr=(r/2)*(r-1);

   else primulr=((r-1)/2)*r;

    ultimulr=(r-1)+primulr;

   if (r%2==0)

       sr=(r/2)*(primulr+ultimulr);

   else sr=((primulr+ultimulr)/2)*r;

   cout << cardpar << endl;

   cout << (sk+sr)/(k+r) << endl;

   while (primulr<ultimulr)

   {

       cout << primulr << " ";

       ++primulr;

       if (primulr<ultimulr)

           cout << primulr << " ";

       cout << ultimulr << " ";

       ++primulr; --ultimulr;

   }

   if (primulr==ultimulr) cout << primulr;

}