Submultimi2

#include <bits/stdc++.h>

using namespace std;
int n, k, r, ak, bk, sumak, ar, br, sumar, i, j, l=0;
int main()
{
    cin>>n>>k>>r;
    if(n%2==0)
        cout<<n/2<<'\n';
    else
        cout<<(n-1)/2<<'\n';
    ak=(k*(k-1))/2;
    bk=ak+k-1;
    ar=(r*(r-1))/2;
    br=ar+r-1;
    sumak=((ak+bk)*k)/2;
    sumar=((ar+br)*r)/2;
    cout<<(sumak+sumar)/(k+r)<<'\n';
    i=ar;
    j=br;
    while(i<j)
    {
        cout<<i<<" ";
        i++;
        cout<<i<<" ";
        i++;
        if(j>i)
            cout<<j<<" ", j--;
    }
    if(i==j)
        cout<<i<<" ";
    return 0;
}