/*#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")*/
#include <stdio.h>
#include <bits/stdc++.h>
using namespace std;

#define amen ;
#define vec vector
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define Str(x) to_string(x)
#define len(s) (int)s.size()
#define int long long
typedef long long ll;
typedef double d;
typedef long double lld;
typedef string str;
typedef unsigned long long ull;


main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    int a, b, sum = 0;
    cin >> a >> b;
    vector <int> v, ansa, ansb;
    for (int i = 1; i < 1e6; i++)
    {
        if (sum + i > a)
        {
            int k = a - sum;
            for (int j = 1; j < i - k; j++)
                ansa.pb(j);
            for (int j = i - k + 1; j <= i; j++)
                ansa.pb(j);
            if (b >= i - k)
            {
                b -= (i - k);
                ansb.pb(i - k);
                sum = 0;
                for (int j = i + 1; sum + j <= b; j++)
                {
                    sum += j;
                    ansb.pb(j);
                }
            }
            break;
        }
        sum += i;
    }
    cout << len(ansa) << endl;
    for (auto it : ansa)
        cout << it << " ";
    cout << endl << len(ansb) << endl;
    for (auto it : ansb)
        cout << it << " ";



    return 0;
}