Submission #266657

#	Time	Username	Problem	Language	Result	Execution time	Memory
266657		islingr	Toys (CEOI18_toy)	C++17	100 / 100	626 ms	4472 KiB

toy

#include <bits/stdc++.h>
using namespace std;

set<int> s;

void recur(int z, int n, int sum) {
  for (int d = z; d * d <= n; ++d)
    if (n % d == 0)
      recur(d, n / d, sum + d - 1);
  s.insert(sum + n - 1);
}

signed main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  int n; cin >> n;
  recur(2, n, 0);
  
  cout << s.size() << '\n';
  for (int v : s) cout << v << ' ';
}

• Subtask 1: 19 / 19
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 21 / 21