結果
問題 | No.1038 TreeAddQuery |
ユーザー | ei1333333 |
提出日時 | 2020-03-15 23:46:53 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 3,208 ms / 4,000 ms |
コード長 | 3,900 bytes |
コンパイル時間 | 982 ms |
コンパイル使用メモリ | 114,748 KB |
実行使用メモリ | 69,756 KB |
最終ジャッジ日時 | 2024-05-03 23:10:58 |
合計ジャッジ時間 | 43,807 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | AC | 30 ms
18,176 KB |
testcase_01 | AC | 30 ms
18,176 KB |
testcase_02 | AC | 30 ms
17,920 KB |
testcase_03 | AC | 59 ms
20,308 KB |
testcase_04 | AC | 64 ms
20,352 KB |
testcase_05 | AC | 57 ms
20,224 KB |
testcase_06 | AC | 56 ms
19,968 KB |
testcase_07 | AC | 64 ms
20,324 KB |
testcase_08 | AC | 2,008 ms
44,016 KB |
testcase_09 | AC | 2,272 ms
43,772 KB |
testcase_10 | AC | 2,265 ms
44,020 KB |
testcase_11 | AC | 2,213 ms
44,140 KB |
testcase_12 | AC | 2,275 ms
43,876 KB |
testcase_13 | AC | 3,208 ms
69,756 KB |
testcase_14 | AC | 2,771 ms
48,752 KB |
testcase_15 | AC | 2,756 ms
46,848 KB |
testcase_16 | AC | 2,611 ms
45,548 KB |
testcase_17 | AC | 2,567 ms
45,160 KB |
testcase_18 | AC | 1,055 ms
44,268 KB |
testcase_19 | AC | 1,198 ms
44,536 KB |
testcase_20 | AC | 1,157 ms
44,280 KB |
testcase_21 | AC | 1,240 ms
44,392 KB |
testcase_22 | AC | 1,414 ms
44,028 KB |
testcase_23 | AC | 1,519 ms
44,028 KB |
testcase_24 | AC | 1,957 ms
43,764 KB |
testcase_25 | AC | 3,056 ms
63,856 KB |
testcase_26 | AC | 2,097 ms
57,724 KB |
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc) Copyright (C) Microsoft Corporation. All rights reserved.
ソースコード
using System; using System.Collections.Generic; class Program { Scanner cin; int N, Q; int[] A, B, C; List<int>[] g, qs; int[] sub, dep; long[] ans; bool[] used; BinaryIndexedTree bit; List<int> prop; void myon() { cin = new Scanner(); N = cin.nextInt(); Q = cin.nextInt(); g = new List<int>[N]; qs = new List<int>[N]; sub = new int[N]; dep = new int[N]; used = new bool[N]; A = new int[Q]; B = new int[Q]; C = new int[Q]; ans = new long[Q]; prop = new List<int>(); for (int i = 0; i < N; i++) { g[i] = new List<int>(); qs[i] = new List<int>(); } for (int i = 1; i < N; i++) { int a = cin.nextInt() - 1; int b = cin.nextInt() - 1; g[a].Add(b); g[b].Add(a); } for (int i = 0; i < Q; i++) { A[i] = cin.nextInt() - 1; B[i] = cin.nextInt(); C[i] = cin.nextInt(); qs[A[i]].Add(i); } build(0); foreach (var i in ans) { Console.WriteLine(i); } } int build_dfs(int idx, int par) { sub[idx] = 1; foreach (var to in g[idx]) { if (to == par || used[to]) continue; sub[idx] += build_dfs(to, idx); } return sub[idx]; } int search_centroid(int idx, int par, int mid) { foreach (var to in g[idx]) { if (to == par || used[to]) continue; if (sub[to] > mid) return search_centroid(to, idx, mid); } return idx; } int add_dfs(int idx, int par, int d) { dep[idx] = d; int max_d = d; foreach (var q in qs[idx]) { prop.Add(q); } foreach (var to in g[idx]) { if (to == par || used[to]) continue; max_d = Math.Max(max_d, add_dfs(to, idx, d + 1)); } return max_d; } void build(int idx) { int centroid = search_centroid(idx, -1, build_dfs(idx, -1) / 2); used[centroid] = true; int d = add_dfs(centroid, -1, 0); bit = new BinaryIndexedTree(d + 1); prop.Sort(); foreach (var q in prop) { ans[q] += bit.query(dep[A[q]]); int rest = B[q] - dep[A[q]]; if (rest >= 0) { bit.add(0, C[q]); bit.add(rest + 1, -C[q]); } } prop.Clear(); foreach(var to in g[centroid]) { if (used[to]) continue; d = add_dfs(to, centroid, 1); bit = new BinaryIndexedTree(d + 1); prop.Sort(); foreach (var q in prop) { ans[q] -= bit.query(dep[A[q]]); int rest = B[q] - dep[A[q]]; if (rest >= 0) { bit.add(0, C[q]); bit.add(rest + 1, -C[q]); } } prop.Clear(); } foreach (var to in g[centroid]) { if (used[to]) continue; build(to); } } static void Main(string[] args) { new Program().myon(); } } class Scanner { string[] s; int i; readonly char[] cs = new char[] { ' ' }; public Scanner() { s = new string[0]; i = 0; } public string next() { if (i < s.Length) return s[i++]; string st = Console.ReadLine(); while (st == "") st = Console.ReadLine(); s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries); if (s.Length == 0) return next(); i = 0; return s[i++]; } public string nextLine() { return Console.ReadLine(); } public int nextInt() { return int.Parse(next()); } public long nextLong() { return long.Parse(next()); } public double nextDouble() { return double.Parse(next()); } } class BinaryIndexedTree { long[] data; public BinaryIndexedTree(int sz) { data = new long[sz + 1]; } public void add(int k, long x) { for (++k; k < data.Length; k += k & -k) { data[k] += x; } } public long query(int k) { long ret = 0; for (++k; k > 0; k -= k & -k) { ret += data[k]; } return ret; } }