結果
問題 | No.5020 Averaging |
ユーザー | shogo314 |
提出日時 | 2024-02-25 17:25:23 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 984 ms / 1,000 ms |
コード長 | 3,504 bytes |
コンパイル時間 | 2,474 ms |
コンパイル使用メモリ | 213,440 KB |
実行使用メモリ | 6,676 KB |
スコア | 28,548,384 |
最終ジャッジ日時 | 2024-02-25 17:26:18 |
合計ジャッジ時間 | 54,518 ms |
ジャッジサーバーID (参考情報) |
judge12 / judge14 |
純コード判定しない問題か言語 |
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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 | 983 ms
6,676 KB |
testcase_01 | AC | 983 ms
6,676 KB |
testcase_02 | AC | 983 ms
6,676 KB |
testcase_03 | AC | 983 ms
6,676 KB |
testcase_04 | AC | 983 ms
6,676 KB |
testcase_05 | AC | 983 ms
6,676 KB |
testcase_06 | AC | 983 ms
6,676 KB |
testcase_07 | AC | 983 ms
6,676 KB |
testcase_08 | AC | 982 ms
6,676 KB |
testcase_09 | AC | 983 ms
6,676 KB |
testcase_10 | AC | 983 ms
6,676 KB |
testcase_11 | AC | 983 ms
6,676 KB |
testcase_12 | AC | 983 ms
6,676 KB |
testcase_13 | AC | 983 ms
6,676 KB |
testcase_14 | AC | 983 ms
6,676 KB |
testcase_15 | AC | 984 ms
6,676 KB |
testcase_16 | AC | 983 ms
6,676 KB |
testcase_17 | AC | 984 ms
6,676 KB |
testcase_18 | AC | 983 ms
6,676 KB |
testcase_19 | AC | 983 ms
6,676 KB |
testcase_20 | AC | 983 ms
6,676 KB |
testcase_21 | AC | 983 ms
6,676 KB |
testcase_22 | AC | 983 ms
6,676 KB |
testcase_23 | AC | 983 ms
6,676 KB |
testcase_24 | AC | 983 ms
6,676 KB |
testcase_25 | AC | 983 ms
6,676 KB |
testcase_26 | AC | 983 ms
6,676 KB |
testcase_27 | AC | 983 ms
6,676 KB |
testcase_28 | AC | 983 ms
6,676 KB |
testcase_29 | AC | 984 ms
6,676 KB |
testcase_30 | AC | 983 ms
6,676 KB |
testcase_31 | AC | 983 ms
6,676 KB |
testcase_32 | AC | 983 ms
6,676 KB |
testcase_33 | AC | 983 ms
6,676 KB |
testcase_34 | AC | 983 ms
6,676 KB |
testcase_35 | AC | 983 ms
6,676 KB |
testcase_36 | AC | 983 ms
6,676 KB |
testcase_37 | AC | 982 ms
6,676 KB |
testcase_38 | AC | 983 ms
6,676 KB |
testcase_39 | AC | 983 ms
6,676 KB |
testcase_40 | AC | 983 ms
6,676 KB |
testcase_41 | AC | 983 ms
6,676 KB |
testcase_42 | AC | 983 ms
6,676 KB |
testcase_43 | AC | 983 ms
6,676 KB |
testcase_44 | AC | 983 ms
6,676 KB |
testcase_45 | AC | 983 ms
6,676 KB |
testcase_46 | AC | 983 ms
6,676 KB |
testcase_47 | AC | 983 ms
6,676 KB |
testcase_48 | AC | 983 ms
6,676 KB |
testcase_49 | AC | 983 ms
6,676 KB |
ソースコード
#include <bits/stdc++.h> using ll = long long; using std::pair; using std::vector; namespace inner { std::random_device seed_gen; std::mt19937_64 engine(0); template <typename T> T randint(T l, T r) { assert(l <= r); return std::uniform_int_distribution<T>(l, r)(engine); } template <typename T> T randint(T x) { assert(0 < x); return std::uniform_int_distribution<T>(0, x - 1)(engine); } template <typename T> T randreal(T l, T r) { assert(l <= r); return std::uniform_real_distribution<T>(l, r)(engine); } template <typename T> T randnorm(T mean, T stddev) { assert(stddev > 0); return std::normal_distribution<T>(mean, stddev)(engine); } template <typename T> size_t randdist(const vector<T>& dist) { assert(dist.size() > 0); vector<T> acc(dist.size() + 1); for (size_t i = 0; i < dist.size(); i++) { assert(dist[i] >= 0); acc[i + 1] = acc[i] + dist[i]; } assert(acc.back() > 0); return std::upper_bound(acc.begin(), acc.end(), randreal<T>(0, acc.back())) - acc.begin() - 1; } template <typename T> void shuffle(vector<T>& v) { std::shuffle(v.begin(), v.end(), engine); } template <typename T> T randchoice(const vector<T>& v) { return v[randint(v.size())]; } auto start_time = std::chrono::system_clock::now(); /** * @brief ms */ uint64_t elapsed_time() { return (std::chrono::system_clock::now() - inner::start_time).count() / 1000000; } } // namespace inner struct Solver { static const ll ANS_MAX; const ll N; vector<ll> A; vector<ll> B; Solver(const ll& _N, const vector<ll>& _A, const vector<ll>& _B) : N(_N), A(_A), B(_B) { } pair<ll, ll> calc(const vector<pair<ll, ll>>& c) { assert(c.size() <= 50); vector<ll> tmp_A(A); vector<ll> tmp_B(B); for (auto [u, v] : c) { assert(0 <= u and u < N); assert(0 <= v and v < N); tmp_A.at(u) = tmp_A.at(v) = (tmp_A.at(u) + tmp_A.at(v)) / 2; tmp_B.at(u) = tmp_B.at(v) = (tmp_B.at(u) + tmp_B.at(v)) / 2; } return {std::abs(tmp_A[0] - 500'000'000'000'000'000), std::abs(tmp_B[0] - 500'000'000'000'000'000)}; } ll max(const pair<ll, ll>& p) { return std::max(p.first, p.second); } vector<pair<ll, ll>> solve() { vector<pair<ll, ll>> best_ans(N - 1); for (ll i = 0; i < N - 1; i++) { best_ans[i] = {0, i + 1}; } ll best_score = max(calc(best_ans)); while (inner::elapsed_time() <= 980) { vector<pair<ll, ll>> ans(ANS_MAX); for (ll i = 0; i < ANS_MAX; i++) { ll u, v; do { u = inner::randint(N); v = inner::randint(N); } while (u == v or (i == ANS_MAX - 1 and u != 0 and v != 0)); ans[i] = {u, v}; } ll score = max(calc(ans)); if (score < best_score) { best_score = score; best_ans = ans; } } std::cerr << "a = " << best_score << std::endl; return best_ans; } }; const ll Solver::ANS_MAX = 50; int main() { ll N; std::cin >> N; vector<ll> A(N), B(N); for (int i = 0; i < N; i++) std::cin >> A[i] >> B[i]; Solver solver(N, A, B); vector<pair<ll, ll>> ans = solver.solve(); std::cout << ans.size() << std::endl; for (auto [u, v] : ans) { std::cout << u + 1 << " " << v + 1 << std::endl; } }