Submission #448155

#	Time	Username	Problem	Language	Result	Execution time	Memory
448155		Calico	Toys (CEOI18_toy)	C++17	79 / 100	5065 ms	3940 KiB

toy

#include <bits/extc++.h>
using namespace std;
 
__gnu_pbds::gp_hash_table<int, bool> ans;
__gnu_pbds::gp_hash_table<int, vector<int>> dvs;
 
void brute(int n, int sum, int prv) {
	ans[n+sum-1] = 1;
 
	for (int i: dvs[n]) {
		if (i < prv) break;
		brute(n/i, sum+i-1, i);
	}
}
 
signed main() {
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n; cin >> n; vector<int> dv;
	for (int i = 1; i*i <= n; i++) {
		if (n % i == 0) {
			int a = i, b = n/i;
			dv.push_back(a);
			if (a != b) dv.push_back(b);
		}
	}
	
	for (int j: dv) {
		for (int i = 1; i*i <= j; i++) {
			if (j % i == 0) {
				int a = i, b = j/i;
				if (a != 1 && a != j) dvs[j].push_back(a);
				if (a != b && b != 1 && b != j) dvs[j].push_back(b);
			}
		}
		sort(dvs[j].begin(), dvs[j].end(), greater<int>());
	}
 
	brute(n, 0, 0);
  	
  	vector<int> anss;
  	for (auto [u, v]: ans) {
      	anss.push_back(u);
    }
	sort(anss.begin(), anss.end());
 
	cout << anss.size() << '\n';
	for (int i: anss) cout << i << ' ';
	
	return 0;
}

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