#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define mod 998244353
#define mxn 1000
#define inf 1000000000000000001ll
int main()
{
    ios::sync_with_stdio(0);
    ll t = 1;
    //cin >> t;
    while(t--)
    {
        ll x;
        cin >> x;
        ll num = 1;
        set<ll> s;
        while(true)
        {
            if(x==0)
                break;
            if(x-num<0)
            {
                auto it = s.end();
                it--;
                s.erase(it);
                s.insert(x+num-1);
                break;
            }
            s.insert(num);
            x -= num;
            num++;
        }
        cout << s.size() << endl;
        for(auto ss : s)
            cout << ss << " ";
        cout << endl;
    }
    return 0;
}