Submission #883687

#	Time	Username	Problem	Language	Result	Execution time	Memory
883687		tsumondai	Toys (CEOI18_toy)	C++14	100 / 100	656 ms	5020 KiB

toy

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

#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define foru(i, l, r) for(int i = l; i <= r; i++)
#define ford(i, r, l) for(int i = r; i >= l; i--)
#define __TIME  (1.0 * clock() / CLOCKS_PER_SEC)

typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;
 
const int N = 1e6 + 5;
 
const int oo = 1e9, mod = 1e9 + 7;
 
int n, m, k;
string s;
vector<int> arr;

set<int> ans;

void res(int n, int last, int sum) {
	ans.insert(sum + n - 1);
	for(int i = last; i <= n / i; i++) if (n % i == 0) res(n / i, i, sum + i - 1);
}
 
void process() {
	int n; cin >> n;
	res(n, 2, 0);
	cout << ans.size() << '\n';
	for (int x : ans) cout << x << ' ';
	cout << '\n';
}

signed main() {
    cin.tie(0)->sync_with_stdio(false);
    //freopen(".inp", "r", stdin);
    //freopen(".out", "w", stdout);
    process();
    cerr << "Time elapsed: " << __TIME << " s.\n";
    return 0;
}

// dont stop

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