Submission #828460

#	Time	Username	Problem	Language	Result	Execution time	Memory
828460		shoryu386	Toys (CEOI18_toy)	C++17	100 / 100	2501 ms	93804 KiB

toy

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

#define int long long

map<int, set<int>> deepee;

set<int> recur(int n){
	if (n == 1) return {1};
	if (deepee.count(n) != 0) return deepee[n];
	
	set<int> ret;
	for (int x = 1; x <= sqrt(n); x++){
		if (n % x == 0) {
			//cerr << "wat " << n/x << ' ' << x << '\n';
			
			if (n/x != n){
				for (auto y : recur(n/x)){
					ret.insert(x - 1 + y);
				}
			}
			
			for (auto y : recur(x)){
				ret.insert(n/x -1 + y);
			}
		}
	}
	return deepee[n] = ret;
}

main(){
	int n; cin >> n;
	
	set<int> ans = recur(n);
	cout << ans.size() << '\n';
	for (auto x : ans){
		cout << x-1 << ' ';
	}
}

Compilation message (stderr)

toy.cpp:31:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   31 | main(){
      | ^~~~

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