Submission #1214157

#	Time	Username	Problem	Language	Result	Execution time	Memory
1214157		vako_p	Toys (CEOI18_toy)	C++20	59 / 100	5090 ms	980 KiB

toy

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ff first
#define sd second
#define debug(x) cerr << #x << "----> " << x << endl;
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("O3")

const int mxN = 1e6 + 5;
ll n;

set<ll> f(ll x){
	set<ll> res;
	res.insert(x - 1);
	for(int i = 2; i <= sqrtl(x); i++){
		if(x % i == 0){
			ll k = i;
			for(auto it : f(x / k)) res.insert(k - 1 + it);
			k = x / i;
			for(auto it : f(x / k)) res.insert(k - 1 + it);
		} 
	}
	return res;
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> n;
	set<ll> ans = f(n);
	cout << ans.size() << '\n';
	for(auto it : ans) cout << it << ' ';
}

• Subtask 1: 19 / 19
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 21