結果
問題 | No.2296 Union Path Query (Hard) |
ユーザー | t98slider |
提出日時 | 2023-03-08 17:35:43 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
RE
|
実行時間 | - |
コード長 | 4,001 bytes |
コンパイル時間 | 2,137 ms |
コンパイル使用メモリ | 185,684 KB |
実行使用メモリ | 9,216 KB |
最終ジャッジ日時 | 2024-05-02 14:04:35 |
合計ジャッジ時間 | 8,709 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | RE | - |
testcase_01 | RE | - |
testcase_02 | RE | - |
testcase_03 | RE | - |
testcase_04 | RE | - |
testcase_05 | RE | - |
testcase_06 | RE | - |
testcase_07 | RE | - |
testcase_08 | RE | - |
testcase_09 | RE | - |
testcase_10 | RE | - |
testcase_11 | RE | - |
testcase_12 | RE | - |
testcase_13 | RE | - |
testcase_14 | RE | - |
testcase_15 | RE | - |
testcase_16 | RE | - |
testcase_17 | RE | - |
testcase_18 | RE | - |
testcase_19 | RE | - |
testcase_20 | RE | - |
testcase_21 | RE | - |
testcase_22 | RE | - |
testcase_23 | RE | - |
testcase_24 | RE | - |
testcase_25 | RE | - |
testcase_26 | RE | - |
testcase_27 | RE | - |
testcase_28 | RE | - |
testcase_29 | RE | - |
testcase_30 | RE | - |
testcase_31 | RE | - |
testcase_32 | RE | - |
testcase_33 | RE | - |
testcase_34 | RE | - |
testcase_35 | RE | - |
testcase_36 | RE | - |
testcase_37 | RE | - |
testcase_38 | RE | - |
testcase_39 | RE | - |
testcase_40 | RE | - |
testcase_41 | RE | - |
testcase_42 | RE | - |
testcase_43 | RE | - |
testcase_44 | RE | - |
testcase_45 | RE | - |
testcase_46 | RE | - |
testcase_47 | RE | - |
testcase_48 | RE | - |
コンパイルメッセージ
main.cpp: In constructor 'problem_H::problem_H(int)': main.cpp:17:43: warning: '*this.problem_H::N' is used uninitialized [-Wuninitialized] 17 | problem_H(int n) : N(n), MAX_LOGV(__lg(N) + 1), G(N), parent_or_size(N, -1), | ~~~~^~~
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; struct problem_H { int MAX_LOGV, N; vector<vector<pair<int, int>>> G; vector<vector<int>> parent; vector<ll> dp; vector<int> depth; vector<int> log_table; vector<int> parent_or_size; vector<ll> diameter; vector<array<int, 2>> diameter_vertex; queue<int> que; problem_H(int n) : N(n), MAX_LOGV(__lg(N) + 1), G(N), parent_or_size(N, -1), parent(MAX_LOGV, vector<int>(N, -1)), dp(N), depth(N), diameter(N), diameter_vertex(N), log_table(N) { diameter_vertex[0] = {0, 0}; diameter_vertex[1] = {1, 1}; for(int i = 2; i < N; i++) { diameter_vertex[i] = {i, i}; log_table[i] = log_table[i >> 1] + 1; } } int leader(int &v){ return parent_or_size[v] < 0 ? v : parent_or_size[v]; } void merge(int u, int v, int w){ int x = leader(u), y = leader(v); if(-parent_or_size[x] < -parent_or_size[y]) { swap(x, y); swap(u, v); } parent_or_size[x] += parent_or_size[y]; G[u].emplace_back(v, w); G[v].emplace_back(u, w); update_parent(v, u, w); que.emplace(v); while(!que.empty()){ v = que.front(); que.pop(); parent_or_size[v] = x; for(auto &edge : G[v]){ tie(u, w) = edge; if(parent[0][v] == u) continue; update_parent(u, v, w); que.emplace(u); } } update_diameter(x, y); } void update_parent(const int &v, const int &par, const int &w){ parent[0][v] = par; int depth_log = log_table[max(depth[v], depth[par] + 1)]; depth[v] = depth[par] + 1; dp[v] = dp[par] + w; for(int i = 0; i < depth_log; i++){ parent[i + 1][v] = parent[i][v] == -1 ? -1 : parent[i][parent[i][v]]; } } void update_diameter(const int &x, const int &y){ ll mx; int u, v; if(diameter[x] >= diameter[y]) { mx = diameter[x]; u = diameter_vertex[x][0], v = diameter_vertex[x][1]; } else { mx = diameter[y]; u = diameter_vertex[y][0], v = diameter_vertex[y][1]; } for(int i = 0; i < 2; i++){ int v1 = diameter_vertex[x][i]; for(int j = 0; j < 2; j++){ int v2 = diameter_vertex[y][j]; ll d = dist(v1, v2); if(d > mx){ mx = d; u = v1, v = v2; } } } diameter[x] = mx; diameter_vertex[x] = {u, v}; } long long dist(int u, int v){ if(leader(u) != leader(v)) return -1; if(depth[v] < depth[u]) swap(v, u); long long res = dp[u] + dp[v]; int d = depth[v] - depth[u]; while(d){ v = parent[__lg(d & -d)][v]; d -= d & -d; } if(u == v) return res - 2 * dp[v]; for(int i = __lg(depth[v]); i >= 0; i--){ if(parent[i][v] != parent[i][u]){ v = parent[i][v]; u = parent[i][u]; } } v = parent[0][v]; return res - 2 * dp[v]; } }; int main(){ ios::sync_with_stdio(false); cin.tie(0); int N, Q; ll X; cin >> N >> X >> Q; problem_H uf(N); int type, u, v, w; while(Q--){ cin >> type; if(type == 1){ cin >> v >> w; uf.merge(v, X, w); }else if(type == 2){ cin >> u >> v; ll d = uf.dist(u, v); cout << d << '\n'; if(d != -1) (X += d) %= N; }else if(type == 3){ cin >> v; cout << uf.diameter[uf.leader(v)] << '\n'; }else{ cin >> v; X += v; if(X >= N) X -= N; } } }