Submission #828585

#	Time	Username	Problem	Language	Result	Execution time	Memory
828585		penguin133	Toys (CEOI18_toy)	C++17	19 / 100	1 ms	468 KiB

toy

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

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
int n;
set <int> s;
void lol(int x, int y, int z){
	if(x == 1){
		s.insert(z);
		return;
	}
	for(int i=y;i<=sqrt(x);i++)if(x%i == 0)lol(x/i, i, z + i - 1);
	lol(1, x, z + x - 1);
	return;
}

void solve(){
	cin >> n;
	lol(n, 2, 0);
  	assert(s.size() <= 2 * (sqrt(n) + 1));
	cout << (int)s.size() << '\n';
	for(auto i : s)cout << i << ' ';
	cout << '\n';
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message (stderr)

toy.cpp:34:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   34 | main(){
      | ^~~~

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