#include<bits/stdc++.h>

using namespace std;

#define pb push_back

typedef long long ll;

const int M=1e6+;

int book[M];

int main(){

    ll n,m;

    cin>>n>>m;

    ll i=;

    while((i+)*i<=(n+m)*)

        i++;

    i--;

    int tot=;

    for(int j=i;j>=;j--){

        if(n>=j){

            book[j]=;

            n-=j;

            tot++;

        }

        if(n==)

            break;

    }

    cout<<tot<<endl;

    for(int j=;j<=i;j++){

        if(book[j])

            cout<<j<<' ';

    }

    cout<<endl;

    cout<<i-tot<<endl;

    for(int j=;j<=i;j++)

        if(!book[j])

            cout<<j<<' ';

}