Submission #893543

#	Time	Username	Problem	Language	Result	Execution time	Memory
893543		vjudge1	Toys (CEOI18_toy)	C++17	79 / 100	231 ms	3664 KiB

toy

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

#define ll long long
#define pb push_back
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()

const int N = (int)2e5 + 5;
const int MAX = (int)1e8 + 5;
const ll mod = (int)1e9 + 7;
const ll inf = (int)(1e9) + 100;

int n;
map<int, vector<int>> dv;
vector<int> ans;
bitset<MAX> b;

void rec(int c = 1, int sum = 0, int val = n) {
    if (val == 1) {
        if (b[sum] == 0) ans.pb(sum);
        b[sum] = 1;
        return;
    }
    for (auto i : dv[val]) {
        if (i < c) continue;
        rec(i, sum + (i - 1), val / i);
    }
}


void solve() {
    cin >> n;
    for (int i = 2; i * i <= n; i++) {
        if (n % i == 0) {
            dv[n].pb(i);
            if (n / i != i) dv[n].pb(n / i);
        }
    }
    dv[n].pb(n);
    sort(all(dv[n]));
    for (int i : dv[n]) {
        for (int j = 2; j * j <= i; j++) {
            if (i % j == 0) {
                dv[i].pb(j);
                if (i / j != j) dv[i].pb(i / j);
            }
        }
        dv[i].pb(i);
        sort(all(dv[i]));
    }
    rec();
    cout << sz(ans) << "\n";
    sort(all(ans));
    for (int i : ans) cout << i << " ";
}

signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int T = 1;
    //cin >> T;
    while (T--) solve();
    return 0;
}

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