Submission #78857

#	Time	Username	Problem	Language	Result	Execution time	Memory
78857		tmwilliamlin168	Toys (CEOI18_toy)	C++14	79 / 100	5035 ms	9420 KiB

toy

#include <bits/stdc++.h>
using namespace std;

int n;
vector<int> ps, ans;

void dfs(int x, int i, int s) {
	ans.push_back(x-1+s);
	for(; i<ps.size(); ++i)
		if(x%ps[i]==0&&x/ps[i]>=ps[i])
			dfs(x/ps[i], i, s+ps[i]-1);
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> n;
	for(int i=2; i*i<=n; ++i)
		if(n%i==0)
			ps.push_back(i);
	dfs(n, 0, 0);
	sort(ans.begin(), ans.end());
	ans.resize(unique(ans.begin(), ans.end())-ans.begin());
	cout << ans.size() << "\n";
	for(int ai : ans)
		cout << ai << " ";
}

Compilation message (stderr)

toy.cpp: In function 'void dfs(int, int, int)':
toy.cpp:9:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(; i<ps.size(); ++i)
        ~^~~~~~~~~~

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