Submission #1119710

#	Time	Username	Problem	Language	Result	Execution time	Memory
1119710		vjudge1	Toys (CEOI18_toy)	C++17	39 / 100	15 ms	1616 KiB

toy

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define ll int
#define F first
#define S second
#define ull unsigned long long
#define db double
#define ldb long double
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ppf pop_front
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
#define ordered_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
#define all(x) x.begin(), x.end()

const int mod = 1e9 + 7;
const int N = 500001;

using namespace std;
using namespace __gnu_pbds;

ll n, a;
map <multiset<ll>, ll> mp;
map <pair <ll, ll>, ll> tp;
set <ll> ans;

void rec (multiset <ll> v, ll sum){
	mp[v]++;
	if (tp[{v.size(), sum}]){
		return;
	}
	tp[{v.size(), sum}]++;
	ans.insert (sum - v.size());
	multiset <ll> q;
	for (auto i: v){
		q.insert(i);
	}
	for (auto i: v){
		for (int y = 2; y <= sqrt (i); y++){
			if (i % y == 0){
				q.erase (q.find(i));
				q.insert(y);
				q.insert(i / y);
				if (mp[q] == 0)rec (q, sum - i + y + i / y);
				q.erase(q.find(y));
				q.erase (q.find(i / y));
				q.insert(i); 
			}
		}
	}
}

signed main (){
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	cin >> n;
	rec ({n}, n);
	cout << ans.size() << '\n';
	for (auto i: ans){
		cout << i << ' ';
	}
}

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