#include <bits/stdc++.h>
#define N 1001
using namespace std;
int n,p;
int A[N];///1 -multimea A 2-multimea B
int s1,s2;
int main()
{
    ///punctul a
    cin>>n>>p;
    if(!(n>=4 && n%4==0 &&1<=p &&p <=n/2))
        {cout<<"date invalide"; return 0;}
    ///punctul b
    for(int i=1;i<=n;i++)
        if(i<=n/2)
           if(i%2==1)A[i]=1;
           else A[i]=2;
        else
           if(i%2==0)A[i]=1;
           else A[i]=2;
    cout<<"Multimea A: ";
    for(int i=1;i<=n;i++)
        if(A[i]==1) cout<<i<<" ",s1+=i;
    cout<<"\nMultimea B: ";
    for(int i=1;i<=n;i++)
        if(A[i]==2) cout<<i<<" ",s2+=i;
    cout<<"\n suma multimi "<<s1<<" "<<s2<<"\n";
    ///punctul c
    if(p%2==1)
    {
       cout<<"\n partitie inexistenta";
       return 0;
    }
    else
    {
       if(p/2%2==1)  {A[p]=0;A[p/2]=2;}
       else {A[p]=0; A[1]=2; A[2]=1;A[p/2+1]=2;}
    }
    s1=s2=0;
    cout<<"\n Multimea A: ";
    for(int i=1;i<=n;i++)
        if(A[i]==1) cout<<i<<" ",s1+=i;
    cout<<"\n Multimea B: ";
    for(int i=1;i<=n;i++)
        if(A[i]==2) cout<<i<<" ",s2+=i;
    cout<<"\n suma multimi "<<s1<<" "<<s2<<"\n";
    return 0;
}