結果
問題 | No.2634 Tree Distance 3 |
ユーザー | umimel |
提出日時 | 2024-02-16 23:01:34 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 881 ms / 3,000 ms |
コード長 | 4,136 bytes |
コンパイル時間 | 2,366 ms |
コンパイル使用メモリ | 193,148 KB |
実行使用メモリ | 55,116 KB |
最終ジャッジ日時 | 2024-09-28 21:36:59 |
合計ジャッジ時間 | 34,683 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | 501 ms
47,428 KB |
testcase_01 | AC | 501 ms
47,616 KB |
testcase_02 | AC | 478 ms
47,488 KB |
testcase_03 | AC | 470 ms
47,604 KB |
testcase_04 | AC | 502 ms
47,592 KB |
testcase_05 | AC | 458 ms
42,984 KB |
testcase_06 | AC | 446 ms
43,048 KB |
testcase_07 | AC | 464 ms
42,952 KB |
testcase_08 | AC | 387 ms
45,552 KB |
testcase_09 | AC | 400 ms
45,552 KB |
testcase_10 | AC | 403 ms
45,540 KB |
testcase_11 | AC | 391 ms
45,536 KB |
testcase_12 | AC | 378 ms
45,612 KB |
testcase_13 | AC | 326 ms
40,800 KB |
testcase_14 | AC | 309 ms
40,544 KB |
testcase_15 | AC | 311 ms
40,656 KB |
testcase_16 | AC | 503 ms
49,744 KB |
testcase_17 | AC | 286 ms
30,056 KB |
testcase_18 | AC | 371 ms
36,036 KB |
testcase_19 | AC | 418 ms
44,484 KB |
testcase_20 | AC | 101 ms
17,664 KB |
testcase_21 | AC | 743 ms
50,120 KB |
testcase_22 | AC | 720 ms
53,524 KB |
testcase_23 | AC | 665 ms
55,116 KB |
testcase_24 | AC | 698 ms
50,348 KB |
testcase_25 | AC | 720 ms
48,644 KB |
testcase_26 | AC | 708 ms
51,164 KB |
testcase_27 | AC | 881 ms
43,708 KB |
testcase_28 | AC | 820 ms
45,116 KB |
testcase_29 | AC | 754 ms
44,236 KB |
testcase_30 | AC | 653 ms
41,944 KB |
testcase_31 | AC | 635 ms
41,808 KB |
testcase_32 | AC | 616 ms
41,864 KB |
testcase_33 | AC | 359 ms
30,728 KB |
testcase_34 | AC | 52 ms
8,960 KB |
testcase_35 | AC | 165 ms
19,772 KB |
testcase_36 | AC | 92 ms
12,800 KB |
testcase_37 | AC | 215 ms
22,428 KB |
testcase_38 | AC | 3 ms
6,820 KB |
testcase_39 | AC | 4 ms
6,816 KB |
testcase_40 | AC | 3 ms
6,816 KB |
testcase_41 | AC | 3 ms
6,816 KB |
testcase_42 | AC | 4 ms
6,820 KB |
testcase_43 | AC | 141 ms
17,380 KB |
testcase_44 | AC | 89 ms
12,672 KB |
testcase_45 | AC | 497 ms
39,768 KB |
testcase_46 | AC | 289 ms
27,472 KB |
testcase_47 | AC | 587 ms
43,904 KB |
testcase_48 | AC | 617 ms
46,268 KB |
testcase_49 | AC | 635 ms
46,352 KB |
testcase_50 | AC | 651 ms
46,420 KB |
testcase_51 | AC | 667 ms
46,344 KB |
testcase_52 | AC | 627 ms
46,340 KB |
testcase_53 | AC | 3 ms
6,820 KB |
testcase_54 | AC | 3 ms
6,820 KB |
testcase_55 | AC | 3 ms
6,816 KB |
testcase_56 | AC | 3 ms
6,820 KB |
testcase_57 | AC | 3 ms
6,816 KB |
testcase_58 | AC | 2 ms
6,820 KB |
testcase_59 | AC | 2 ms
6,816 KB |
testcase_60 | AC | 492 ms
46,060 KB |
testcase_61 | AC | 506 ms
46,128 KB |
testcase_62 | AC | 500 ms
46,148 KB |
testcase_63 | AC | 353 ms
44,200 KB |
testcase_64 | AC | 217 ms
30,292 KB |
testcase_65 | AC | 335 ms
41,848 KB |
testcase_66 | AC | 78 ms
15,120 KB |
testcase_67 | AC | 61 ms
12,936 KB |
testcase_68 | AC | 286 ms
40,376 KB |
testcase_69 | AC | 303 ms
41,144 KB |
testcase_70 | AC | 299 ms
40,616 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; using ll = long long; using pll = pair<ll, ll>; #define drep(i, cc, n) for (ll i = (cc); i <= (n); ++i) #define rep(i, n) drep(i, 0, n - 1) #define all(a) (a).begin(), (a).end() #define pb push_back #define fi first #define se second mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count()); const ll MOD1000000007 = 1000000007; const ll MOD998244353 = 998244353; const ll MOD[3] = {999727999, 1070777777, 1000000007}; const ll LINF = 1LL << 60LL; const int IINF = (1 << 30) - 1; template<typename T> struct edge{ int from, to; T cost; int id; edge(){} edge(int to, T cost=1) : from(-1), to(to), cost(cost){} edge(int to, T cost, int id) : from(-1), to(to), cost(cost), id(id){} edge(int from, int to, T cost, int id) : from(from), to(to), cost(cost), id(id){} }; template<typename T> struct redge{ int from, to; T cap, cost; int rev; redge(int to, T cap, T cost=(T)(1)) : from(-1), to(to), cap(cap), cost(cost){} redge(int to, T cap, T cost, int rev) : from(-1), to(to), cap(cap), cost(cost), rev(rev){} }; template<typename T> using Edges = vector<edge<T>>; template<typename T> using weighted_graph = vector<Edges<T>>; template<typename T> using tree = vector<Edges<T>>; using unweighted_graph = vector<vector<int>>; template<typename T> using residual_graph = vector<vector<redge<T>>>; template<typename W> struct lowest_common_ancestor{ int root = 0; int n; int log_n = 1; vector<vector<int>> par; vector<int> depth; lowest_common_ancestor(tree<W> &T, int root=0) : root(root){ n = (int)T.size(); while((1 << log_n) < n) log_n++; par.resize(log_n, vector<int>(n, -1)); depth.resize(n, 0); init(T); } void init(tree<W> &T){ function<void(int, int)> dfs = [&](int v, int p){ par[0][v] = p; for(edge<W> e : T[v]) if(e.to!=p){ depth[e.to] = depth[v]+1; dfs(e.to, v); } }; dfs(root, -1); for(int k=0; k+1<log_n; k++){ for(int v=0; v<n; v++){ if(par[k][v]<0) par[k+1][v] = -1; else par[k+1][v] = par[k][par[k][v]]; } } } int query(int u, int v){ if(depth[u] < depth[v]) swap(u, v); for(int k=0; k<log_n; k++) if((depth[u]-depth[v]) >> k & 1) u = par[k][u]; if(u == v) return u; for(int k=log_n-1; k>=0; k--){ if(par[k][u] != par[k][v]){ u = par[k][u]; v = par[k][v]; } } return par[0][u]; } }; void solve(){ int n; cin >> n; vector<int> a(n); for(int i=0; i<n; i++) cin >> a[i]; { vector<int> c(n); for(int i=0; i<n; i++) c[i] = a[i]; sort(all(c)); c.erase(unique(all(c)), c.end()); for(int i=0; i<n; i++) a[i] = lower_bound(all(c), a[i])-c.begin(); } tree<int> T(n); for(int i=0; i<n-1; i++){ int u, v; cin >> u >> v; u--; v--; T[u].pb(edge<int>(v)); T[v].pb(edge<int>(u)); } lowest_common_ancestor<int> lca(T); vector<int> depth(n, 0); function<void(int, int)> dfs = [&](int v, int p){ for(edge<int> e : T[v]) if(e.to!=p){ depth[e.to] = depth[v]+1; dfs(e.to, v); } }; dfs(0, -1); function<int(int, int)> dist = [&](int u, int v){ return depth[u] + depth[v] -2*depth[lca.query(u, v)]; }; vector<vector<int>> b(n); for(int i=0; i<n; i++) b[a[i]].push_back(i); int s = -1, t = -1; int diam = 0; vector<int> ans(n, 0); for(int i=n-1; i>=0; i--){ //追加 for(int v : b[i]){ if(s==-1){ s = v; t = v; diam = 0; }else{ int s_dist = dist(s, v); int t_dist = dist(t, v); if(diam < max(s_dist, t_dist)){ if(s_dist>=t_dist){ t = v; diam = s_dist; }else{ s = v; diam = t_dist; } } } } for(int v : b[i]){ ans[v] = max(dist(s, v), dist(t, v)); } } for(int i=0; i<n; i++) cout << ans[i] << " "; cout << '\n'; } int main(){ cin.tie(nullptr); ios::sync_with_stdio(false); int T=1; //cin >> T; while(T--) solve(); }