Submission #572040

#	Time	Username	Problem	Language	Result	Execution time	Memory
572040		piOOE	Toys (CEOI18_toy)	C++17	100 / 100	1743 ms	86488 KiB

toy

#include <bits/stdc++.h>

using namespace std;

#define sz(x) ((int)size(x))
#define all(x) begin(x), end(x)
#define trace(x) cout << #x << ": " << (x) << endl;

typedef long long ll;

mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

int rand(int l, int r) { return (int) ((ll) rnd() % (r - l + 1)) + l; }

const int N = 10000;
const ll infL = 3e18;


int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    if (n == 1) {
        cout << "1\n0";
        return 0;
    }
    vector<int> div;
    for (int i = 1; i * i <= n; ++i) {
        if (n % i == 0) {
            div.push_back(i);
            div.push_back(n / i);
        }
    }
    sort(all(div));
    div.resize(unique(all(div)) - begin(div));
    int m = sz(div);
    vector<set<int>> st(m);
    for (int i = 1; i < m; ++i) {
        int x = div[i];
        st[i].insert(x - 1);
        for (int j = i - 1; j > 0; --j) {
            int y = div[j];
            if (x % y == 0) {
                int z = x / y;
                for (int u : st[j])
                    st[i].insert(z - 1 + u);
            }
        }
    }
    cout << sz(st[m - 1]) << '\n';
    for (int x : st[m - 1])
        cout << x << " ";
    return 0;
}

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