Submission #142911

#	Time	Username	Problem	Language	Result	Execution time	Memory
142911		IC_COLDSTOP	Toys (CEOI18_toy)	C++17	100 / 100	3485 ms	71432 KiB

toy

#include<bits/stdc++.h>

using namespace std;
#define ll long long
//#define int ll
#define MP make_pair
#define pb push_back
#define F first
#define S second
#define REP(i,a,b) for(int i=a; i<b; i++)
#define pii pair<int,int>

const int MX=1e5+3, mod=1e9+7;

int n;
set<int> st;
unordered_map<int,int> mark[MX];

void ANS(int u, int v){
	if(mark[v][u]) return;
	mark[v][u]=1;
	st.insert(u-1+v);
	for(int i=2; i<=sqrt(u); i++) if(u%i==0) ANS(u/i, v+i-1);
}

int32_t main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n;
	ANS(n,0);
	cout<<st.size()<<endl;
	for(auto u:st) cout<<u<<" ";
	cout<<endl;
	return 0;
}

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