結果
問題 | No.2652 [Cherry 6th Tune N] Δρονε χιρχλινγ |
ユーザー | t98slider |
提出日時 | 2024-03-05 00:18:37 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,941 bytes |
コンパイル時間 | 2,510 ms |
コンパイル使用メモリ | 232,624 KB |
実行使用メモリ | 50,652 KB |
最終ジャッジ日時 | 2024-09-29 17:43:02 |
合計ジャッジ時間 | 34,444 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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 |
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testcase_00 | WA | - |
testcase_01 | WA | - |
testcase_02 | WA | - |
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testcase_04 | WA | - |
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testcase_37 | WA | - |
testcase_38 | WA | - |
testcase_39 | WA | - |
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testcase_41 | WA | - |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; struct dsu { public: int csz; dsu() : _n(0) {} dsu(int n) : _n(n), csz(n), parent_or_size(n, -1) {} int merge(int a, int b) { assert(0 <= a && a < _n); assert(0 <= b && b < _n); int x = leader(a), y = leader(b); if (x == y) return x; if (-parent_or_size[x] < -parent_or_size[y]) std::swap(x, y); csz--; parent_or_size[x] += parent_or_size[y]; parent_or_size[y] = x; return x; } bool same(int a, int b) { assert(0 <= a && a < _n); assert(0 <= b && b < _n); return leader(a) == leader(b); } int leader(int a) { assert(0 <= a && a < _n); if (parent_or_size[a] < 0) return a; return parent_or_size[a] = leader(parent_or_size[a]); } int size(int a) { assert(0 <= a && a < _n); return -parent_or_size[leader(a)]; } std::vector<std::vector<int>> groups() { std::vector<int> leader_buf(_n), group_size(_n); for (int i = 0; i < _n; i++) { leader_buf[i] = leader(i); group_size[leader_buf[i]]++; } std::vector<std::vector<int>> result(_n); for (int i = 0; i < _n; i++) { result[i].reserve(group_size[i]); } for (int i = 0; i < _n; i++) { result[leader_buf[i]].push_back(i); } result.erase( std::remove_if(result.begin(), result.end(), [&](const std::vector<int>& v) { return v.empty(); }), result.end()); return result; } private: int _n; // root node: -1 * component size // otherwise: parent std::vector<int> parent_or_size; }; vector<tuple<int,int,int>> manhattan_mst(vector<int> xs, vector<int> ys) { assert(xs.size() == ys.size()); vector<tuple<int,int,int>> ret; int n = (int) xs.size(); vector< int > ord(n); iota(ord.begin(), ord.end(), 0); for(int s = 0; s < 2; s++) { for(int t = 0; t < 2; t++) { auto cmp = [&](int i, int j) -> bool { return xs[i] + ys[i] < xs[j] + ys[j]; }; sort(ord.begin(), ord.end(), cmp); map< int, int > idx; for(int i:ord) { for(auto it = idx.lower_bound(-ys[i]); it != idx.end(); it = idx.erase(it)) { int j = it->second; if(xs[i] - xs[j] < ys[i] - ys[j]) break; ret.emplace_back(i, j, abs(xs[i] - xs[j]) + abs(ys[i] - ys[j])); } idx[-ys[i]] = i; } swap(xs, ys); } for(int i = 0; i < n; i++) xs[i] *= -1; } return ret; } int main(){ ios::sync_with_stdio(false); cin.tie(0); int T; cin >> T; while(T--){ int N, L; cin >> N >> L; vector<int> x(N), y(N); for(int i = 0; i < N; i++){ cin >> x[i] >> y[i]; } dsu uf(N); auto edge = manhattan_mst(x, y); sort(edge.begin(), edge.end(), [&](tuple<int,int,int> lhs, tuple<int,int,int> rhs){ return get<2>(lhs) < get<2>(rhs); }); vector<vector<int>> g(N); for(auto [u, v, c] : edge){ if(uf.same(u, v)) continue; uf.merge(u, v); g[u].push_back(v); g[v].push_back(u); } vector<pair<int,int>> ans; auto dfs = [&](auto dfs, int v, int p) -> void { ans.emplace_back(x[v], y[v]); for(auto u : g[v]){ if(u == p) continue; dfs(dfs, u, v); } }; dfs(dfs, 0, -1); ll d = 0; for(int i = 0; i + 1 < N; i++){ d += abs(ans[i].first - ans[i + 1].first) + abs(ans[i].second - ans[i + 1].second); } cout << N; for(auto [x, y] : ans) cout << x << ' ' << y << '\n'; } }