Submission #975330

#	Time	Username	Problem	Language	Result	Execution time	Memory
975330		IBory	Toys (CEOI18_toy)	C++17	79 / 100	5034 ms	117432 KiB

toy

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

const int MAX = 222222;
vector<int> D;
unordered_set<int> S[MAX];

int main() {
	int N;
	cin >> N;

	for (int i = 1; i * i <= N; ++i) {
		D.push_back(i);
		if (i * i != N) D.push_back(N / i);
	}
	sort(D.begin(), D.end());
	S[0].insert(0);

	for (int i = 0; i < D.size(); ++i) {
		// sort(S[i].begin(), S[i].end());
		// S[i].erase(unique(S[i].begin(), S[i].end()), S[i].end());
		for (int j = i + 1; j < D.size(); ++j) {
			if (D[j] % D[i]) continue;
			for (int n : S[i]) S[j].insert(n + D[j] / D[i] - 1);
		}
	}

	vector<int> ans;
	for (int n : S[D.size() - 1]) ans.push_back(n);
	sort(ans.begin(), ans.end());
	cout << ans.size() << '\n';
	for (int n : ans) cout << n << ' ';
	return 0;

	cout << S[D.size() - 1].size() << '\n';
	for (int n : S[D.size() - 1]) cout << n << ' ';
	return 0;
}

Compilation message (stderr)

toy.cpp: In function 'int main()':
toy.cpp:20:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |  for (int i = 0; i < D.size(); ++i) {
      |                  ~~^~~~~~~~~~
toy.cpp:23:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |   for (int j = i + 1; j < D.size(); ++j) {
      |                       ~~^~~~~~~~~~

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