753A - Santa Claus Candies

using namespace std;
int main(void)
{
    int n, i;
    int sum = 0;
    cin >> n;
    for (i = 1; sum + i <= n and (n - sum - i) > i; ++i)
        sum += i;
    cout << i - 1 + (sum != n) << endl;
    for (int j = 1; j < i; ++j)
        cout << j << " ";
    if (sum != n)
        cout << n - sum << endl;
    return 0;
}