#include <bits/stdc++.h>
using namespace std;
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
template <typename T, typename V>
void __print(const pair<T, V> &x) {
  cerr << '{';
  __print(x.first);
  cerr << ',';
  __print(x.second);
  cerr << '}';
}
template <typename T>
void __print(const T &x) {
  int f = 0;
  cerr << '{';
  for (auto &i : x) cerr << (f++ ? "," : ""), __print(i);
  cerr << "}";
}
void _print() { cerr << "]\n"; }
template <typename T, typename... V>
void _print(T t, V... v) {
  __print(t);
  if (sizeof...(v)) cerr << ", ";
  _print(v...);
}
const long long int mod = 1e9 + 7;
const double eps = 1e-9;
int n;
int bin() {
  int l = 1, h = 1000, ans = 0;
  while (l <= h) {
    int md = (l + h) / 2;
    if (md * (md + 1) / 2 <= n)
      ans = md, l = md + 1;
    else
      h = md - 1;
  }
  return ans;
}
void solve() {
  cin >> n;
  int ans = bin();
  cout << ans << "\n";
  if (ans * (ans + 1) / 2 == n) {
    for (int i = 1; i <= bin(); ++i) cout << i << " ";
    cout << "\n";
    return;
  } else {
    for (int i = 1; i < ans; ++i) cout << i << " ";
    cout << n - ans * (ans - 1) / 2 << "\n";
  }
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int test = 1;
  while (test--) solve();
  return 0;
}
