結果
問題 | No.1917 LCMST |
ユーザー | Georgi Petkov |
提出日時 | 2023-02-11 04:52:07 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 3,096 ms / 4,000 ms |
コード長 | 2,941 bytes |
コンパイル時間 | 1,508 ms |
コンパイル使用メモリ | 175,020 KB |
実行使用メモリ | 145,476 KB |
最終ジャッジ日時 | 2024-07-07 21:04:54 |
合計ジャッジ時間 | 44,950 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 3 ms
5,760 KB |
testcase_01 | AC | 4 ms
5,888 KB |
testcase_02 | AC | 3 ms
6,016 KB |
testcase_03 | AC | 10 ms
6,144 KB |
testcase_04 | AC | 10 ms
6,144 KB |
testcase_05 | AC | 10 ms
6,144 KB |
testcase_06 | AC | 10 ms
6,144 KB |
testcase_07 | AC | 11 ms
6,144 KB |
testcase_08 | AC | 3 ms
5,760 KB |
testcase_09 | AC | 1,808 ms
79,592 KB |
testcase_10 | AC | 1,815 ms
79,572 KB |
testcase_11 | AC | 1,773 ms
79,472 KB |
testcase_12 | AC | 1,363 ms
46,008 KB |
testcase_13 | AC | 393 ms
13,940 KB |
testcase_14 | AC | 1,534 ms
46,368 KB |
testcase_15 | AC | 228 ms
9,316 KB |
testcase_16 | AC | 410 ms
14,016 KB |
testcase_17 | AC | 672 ms
19,456 KB |
testcase_18 | AC | 848 ms
28,496 KB |
testcase_19 | AC | 211 ms
8,716 KB |
testcase_20 | AC | 152 ms
7,548 KB |
testcase_21 | AC | 233 ms
10,020 KB |
testcase_22 | AC | 156 ms
7,552 KB |
testcase_23 | AC | 152 ms
7,424 KB |
testcase_24 | AC | 221 ms
9,816 KB |
testcase_25 | AC | 155 ms
7,552 KB |
testcase_26 | AC | 180 ms
8,344 KB |
testcase_27 | AC | 190 ms
8,600 KB |
testcase_28 | AC | 205 ms
8,576 KB |
testcase_29 | AC | 1,889 ms
145,448 KB |
testcase_30 | AC | 1,782 ms
145,400 KB |
testcase_31 | AC | 1,790 ms
145,288 KB |
testcase_32 | AC | 1,792 ms
145,340 KB |
testcase_33 | AC | 1,781 ms
145,316 KB |
testcase_34 | AC | 77 ms
5,888 KB |
testcase_35 | AC | 75 ms
5,888 KB |
testcase_36 | AC | 76 ms
5,760 KB |
testcase_37 | AC | 3,096 ms
145,312 KB |
testcase_38 | AC | 3,042 ms
145,448 KB |
testcase_39 | AC | 3,021 ms
145,472 KB |
testcase_40 | AC | 3,017 ms
145,476 KB |
testcase_41 | AC | 3,006 ms
145,464 KB |
testcase_42 | AC | 2,834 ms
145,192 KB |
testcase_43 | AC | 83 ms
6,016 KB |
testcase_44 | AC | 83 ms
6,016 KB |
ソースコード
#include <bits/stdc++.h> #define endl '\n' using namespace std; const int maxn = 1e5 + 3; const long long inf = 1e18; const int bucket = 700; int n; bool is[maxn]; long long ans; vector <int> not_taken[maxn]; int taken[maxn]; vector <int> get_divisors(int x) { vector <int> ans; for (int i = 1; i * i <= x; i++) if (x % i == 0) { ans.push_back(i); if (i * i != x) ans.push_back(x / i); } return ans; } void add_num(int x) { for (auto i: get_divisors(x)) not_taken[i].push_back(x); } void read() { cin >> n; for (int i = 1; i <= n; i++) { int x; cin >> x; if (is[x]) { ans += x; continue; } is[x] = true; } } struct edge { int from, to; long long w; edge(int _from, int _to, long long _w) {from = _from, to = _to, w = _w;} bool operator < (const edge &other) const { return w > other.w; } }; ostream &operator << (ostream &out, const edge &e) { out << "edge from " << e.from << " to " << e.to << " with weight " << e.w << endl; return out; } void add_edges(int x, priority_queue <edge> &pq) { for (auto i: get_divisors(x)) { if (i > bucket) { for (auto j: not_taken[i]) if (is[j]) pq.push(edge(x, j, (long long)x * j / i)); } else { if (!taken[i] || x < taken[i]) taken[i] = x; } } } edge get_best_edge(priority_queue <edge> &pq) { while (!pq.empty()) { auto e = pq.top(); if (!is[e.to]) { pq.pop(); continue; } return e; } return edge(-1, -1, inf); } edge get_single(int idx) { while (!not_taken[idx].empty() && !is[not_taken[idx].back()]) not_taken[idx].pop_back(); if (not_taken[idx].empty() || !taken[idx]) return edge(-1, -1, inf); int a = taken[idx], b = not_taken[idx].back(); return edge(a, b, (long long)a * b / idx); } edge get_multiple() { edge ans = {-1, -1, inf}; for (int i = 1; i <= bucket; i++) ans = max(ans, get_single(i)); return ans; } void solve() { int left = 0; for (int i = maxn-1; i >= 1; i--) if (is[i]) add_num(i), left++; for (int i = 1; i < maxn; i++) if (is[i]) { is[i] = false; priority_queue <edge> pq; add_edges(i, pq); left--; while (left) { auto e = get_best_edge(pq); e = max(e, get_multiple()); ans += e.w; is[e.to] = is[e.from] = false; add_edges(e.to, pq); left--; } break; } cout << ans << endl; } int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); read(); solve(); }