Submission #594828

#	Time	Username	Problem	Language	Result	Execution time	Memory
594828		penguinhacker	Toys (CEOI18_toy)	C++17	100 / 100	1742 ms	86968 KiB

toy

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

#define ll long long
#define ar array

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	vector<int> f;
	for (int i=1; i*i<=n; ++i) {
		if (n%i==0) {
			f.push_back(i);
			if (i*i<n)
				f.push_back(n/i);
		}
	}
	sort(f.begin(), f.end());
	set<int> dp[f.size()];
	dp[0]={0};
	for (int i=1; i<f.size(); ++i) {
		dp[i]={f[i]-1};
		for (int j=1; j<i; ++j)
			if (f[i]%f[j]==0) {
				int pos=lower_bound(f.begin(), f.end(), f[i]/f[j])-f.begin();
				for (int x : dp[pos])
					dp[i].insert(x+f[j]-1);
			}
		//cout << f[i] << endl;
	}
	vector<int> ans(dp[f.size()-1].begin(), dp[f.size()-1].end());
	cout << ans.size() << "\n";
	for (int i : ans)
		cout << i << " ";
	return 0;
}

Compilation message (stderr)

toy.cpp: In function 'int main()':
toy.cpp:23:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for (int i=1; i<f.size(); ++i) {
      |                ~^~~~~~~~~

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