結果
問題 | No.5020 Averaging |
ユーザー |
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提出日時 | 2024-02-25 14:20:12 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 2 ms / 1,000 ms |
コード長 | 2,382 bytes |
コンパイル時間 | 5,208 ms |
コンパイル使用メモリ | 314,100 KB |
実行使用メモリ | 6,676 KB |
スコア | 19,641,768 |
最終ジャッジ日時 | 2024-02-25 14:20:20 |
合計ジャッジ時間 | 7,073 ms |
ジャッジサーバーID (参考情報) |
judge14 / judge13 |
純コード判定しない問題か言語 |
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ファイルパターン | 結果 |
---|---|
other | AC * 50 |
ソースコード
#include <bits/stdc++.h>using namespace std;using namespace chrono;#if __has_include(<atcoder/all>)#include <atcoder/all>using namespace atcoder;#endifint main() {const auto start = steady_clock::now();std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);int64_t n;cin >> n;vector<int64_t> as(n), bs(n);for (int64_t i = 0; i < n; i++) {cin >> as[i] >> bs[i];}random_device rnd;mt19937 engine(rnd());uniform_int_distribution<> randt(0, 45);uniform_int_distribution<> randn(0, n - 1);int64_t c = 500000000000000000LL;auto calc_score = [&] {return int64_t(2000000 -100000 * log10(max(abs(as[0] - c), abs(bs[0] - c)) + 1));};vector<int64_t> us, vs;for (int64_t t = 0; t < 50; t++) {if (t % 2 == 0) {int64_t p = 1, q = 2;if (t != 49 && t < 2 * randt(engine)) {p = randn(engine);do {q = randn(engine);} while (p == q);} else {for (int64_t i = 1; i < n; i++) {for (int64_t j = i + 1; j < n; j++) {int64_t x = (as[i] + as[j]) / 2;int64_t y = (bs[i] + bs[j]) / 2;int64_t a = (as[p] + as[q]) / 2;int64_t b = (bs[p] + bs[q]) / 2;if (max(abs(as[0] + x) / 2 - c, abs(bs[0] + y) / 2 - c) <max(abs(as[0] + a) / 2 - c, abs(bs[0] + b) / 2 - c)) {p = i;q = j;}}}}int64_t x = (as[p] + as[q]) / 2;int64_t y = (bs[p] + bs[q]) / 2;as[p] = as[q] = x;bs[p] = bs[q] = y;us.push_back(p + 1);vs.push_back(q + 1);} else {int64_t i = 1;for (int64_t j = 2; j < n; j++) {if (max(abs((as[0] + as[j]) / 2 - c), abs((bs[0] + bs[j]) / 2 - c)) <max(abs((as[0] + as[i]) / 2 - c), abs((bs[0] + bs[i]) / 2 - c))) {i = j;}}int64_t x = (as[0] + as[i]) / 2;int64_t y = (bs[0] + bs[i]) / 2;as[0] = as[i] = x;bs[0] = bs[i] = y;us.push_back(1);vs.push_back(i + 1);}}cout << us.size() << '\n';for (int64_t i = 0; i < us.size(); i++) {cout << us[i] << ' ' << vs[i] << '\n';}cerr << calc_score() << endl;for (int64_t i = 0; i < n; i++) {cerr << as[i] << ' ' << bs[i] << endl;}return 0;}