Submission #266661

#	Time	Username	Problem	Language	Result	Execution time	Memory
266661		islingr	Toys (CEOI18_toy)	C++17	100 / 100	648 ms	4524 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