Submission #934349

#	Time	Username	Problem	Language	Result	Execution time	Memory
934349		tamir1	Toys (CEOI18_toy)	C++14	100 / 100	3031 ms	86512 KiB

toy

#include<bits/stdc++.h>
#define ll int
using namespace std;
ll n,i,j,m,x,y;
vector<ll> a;
set<ll> s[2000],t;
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin >> n;
	for(i=1;i*i<=n;i++){
		if(n%i!=0) continue;
		if(i*i==n){
			a.push_back(i);
			continue;
		}
		a.push_back(i);
		a.push_back(n/i);
	}
	sort(a.begin(),a.end());
	m=a.size();
	s[0].insert(0);
	for(i=0;i<m;i++){
		x=a[i];
		for(j=i+1;j<m;j++){
			y=a[j];
			if(y%x!=0) continue;
			ll add=y/x-1;
			for(ll l:s[i]) s[j].insert(l+add);
		}
	}
	cout << s[m-1].size() << "\n";
	for(ll i:s[m-1]) cout << i << " ";
}

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