結果
| 問題 |
No.235 めぐるはめぐる (5)
|
| コンテスト | |
| ユーザー |
 紙ぺーぱー
|
| 提出日時 | 2016-06-18 05:50:55 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 14,698 bytes |
| コンパイル時間 | 1,295 ms |
| コンパイル使用メモリ | 114,944 KB |
| 実行使用メモリ | 93,208 KB |
| 最終ジャッジ日時 | 2024-10-09 20:24:01 |
| 合計ジャッジ時間 | 23,918 ms |
|
ジャッジサーバーID （参考情報） |
judge4 / judge3 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| other | TLE * 1 -- * 2 |
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.Linq;
using System.Linq.Expressions;
using System.Collections.Generic;
using Debug = System.Diagnostics.Debug;
using StringBuilder = System.Text.StringBuilder;
using System.Numerics;
using Point = System.Numerics.Complex;
using Number = System.Int32;
namespace Program
{
public class Solver
{
public void Solve()
{
var n = sc.Integer();
var G = new HLTreeGraph(n);
G.A = sc.Integer(n);
G.B = sc.Integer(n);
for (int i = 0; i < n - 1; i++)
{
var a = sc.Integer() - 1;
var b = sc.Integer() - 1;
G.AddEdge(a, b);
}
G.Build(0);
var q = sc.Integer();
for (int i = 0; i < q; i++)
{
if (sc.Integer() == 0)
{
var x = sc.Integer() - 1;
var y = sc.Integer() - 1;
var z = sc.Integer();
var lca = G.GetLCA(x, y);
G.Update(lca, x, z);
G.Update(lca, y, z);
G.Update(lca, lca, -z);
}
else
{
var x = sc.Integer() - 1;
var y = sc.Integer() - 1;
var lca = G.GetLCA(x, y);
ModInteger ans = 0;
ans += G.Query(lca, x);
ans += G.Query(lca, y);
ans -= G.Query(lca, lca);
IO.Printer.Out.WriteLine(ans);
}
}
}
public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput());
static T[] Enumerate<T>(int n, Func<int, T> f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; }
static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; }
}
}
#region main
static class Ex
{
static public string AsString(this IEnumerable<char> ie) { return new string(System.Linq.Enumerable.ToArray(ie)); }
static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ") { return string.Join(st, ie); }
static public void Main()
{
var solver = new Program.Solver();
solver.Solve();
Program.IO.Printer.Out.Flush();
}
}
#endregion
#region Ex
namespace Program.IO
{
using System.IO;
using System.Text;
using System.Globalization;
public class Printer: StreamWriter
{
static Printer() { Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false }; }
public static Printer Out { get; set; }
public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } }
public Printer(System.IO.Stream stream) : base(stream, new UTF8Encoding(false, true)) { }
public Printer(System.IO.Stream stream, Encoding encoding) : base(stream, encoding) { }
public void Write<T>(string format, T[] source) { base.Write(format, source.OfType<object>().ToArray()); }
public void WriteLine<T>(string format, T[] source) { base.WriteLine(format, source.OfType<object>().ToArray()); }
}
public class StreamScanner
{
public StreamScanner(Stream stream) { str = stream; }
public readonly Stream str;
private readonly byte[] buf = new byte[1024];
private int len, ptr;
public bool isEof = false;
public bool IsEndOfStream { get { return isEof; } }
private byte read()
{
if (isEof) return 0;
if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; } }
return buf[ptr++];
}
public char Char() { byte b = 0; do b = read(); while ((b < 33 || 126 < b) && !isEof); return (char)b; }
public string Scan()
{
var sb = new StringBuilder();
for (var b = Char(); b >= 33 && b <= 126; b = (char)read())
sb.Append(b);
return sb.ToString();
}
public string ScanLine()
{
var sb = new StringBuilder();
for (var b = Char(); b != '\n'; b = (char)read())
if (b == 0) break;
else if (b != '\r') sb.Append(b);
return sb.ToString();
}
public long Long()
{
if (isEof) return long.MinValue;
long ret = 0; byte b = 0; var ng = false;
do b = read();
while (b != 0 && b != '-' && (b < '0' || '9' < b));
if (b == 0) return long.MinValue;
if (b == '-') { ng = true; b = read(); }
for (; true; b = read())
{
if (b < '0' || '9' < b)
return ng ? -ret : ret;
else ret = ret * 10 + b - '0';
}
}
public int Integer() { return (isEof) ? int.MinValue : (int)Long(); }
public double Double() { var s = Scan(); return s != "" ? double.Parse(s, CultureInfo.InvariantCulture) : double.NaN; }
private T[] enumerate<T>(int n, Func<T> f)
{
var a = new T[n];
for (int i = 0; i < n; ++i) a[i] = f();
return a;
}
public char[] Char(int n) { return enumerate(n, Char); }
public string[] Scan(int n) { return enumerate(n, Scan); }
public double[] Double(int n) { return enumerate(n, Double); }
public int[] Integer(int n) { return enumerate(n, Integer); }
public long[] Long(int n) { return enumerate(n, Long); }
}
}
#endregion
#region ModNumber
public partial struct ModInteger
{
public const long Mod = (long)1e9 + 7;
public long num;
public ModInteger(long n) : this() { num = n % Mod; if (num < 0) num += Mod; }
public override string ToString() { return num.ToString(); }
public static ModInteger operator +(ModInteger l, ModInteger r) { var n = l.num + r.num; if (n >= Mod) n -= Mod; return new ModInteger() { num = n }; }
public static ModInteger operator -(ModInteger l, ModInteger r) { var n = l.num + Mod - r.num; if (n >= Mod) n -= Mod; return new ModInteger() { num = n }; }
public static ModInteger operator *(ModInteger l, ModInteger r) { return new ModInteger(l.num * r.num); }
public static ModInteger operator ^(ModInteger l, long r) { return ModInteger.Pow(l, r); }
public static implicit operator ModInteger(long n) { return new ModInteger(n); }
public static ModInteger Pow(ModInteger v, long k)
{
ModInteger ret = 1;
var n = k;
for (; n > 0; n >>= 1, v *= v)
{
if ((n & 1) == 1)
ret = ret * v;
}
return ret;
}
}
#endregion
#region HLTreeGraph
public class HLTreeGraph
{
public void Update(int from, int to, int val)
{
var f = go[from];
var t = go[to];
if (f.id == t.id)
{
f.seg.Add(pos[from], pos[to] + 1, val);
}
else
{
var ch = GetAncestorAt(t, f.depth + 1);
var med = H[ch];
f.seg.Add(pos[from], pos[med.light.from] + 1, val);
Update(med.light.to, to, val);
}
}
public ModInteger Query(int from, int to)
{
var f = go[from];
var t = go[to];
if (f.id == t.id)
{
var val = f.seg.Query(pos[from], pos[to] + 1);
return val;
}
else
{
var ch = GetAncestorAt(t, f.depth + 1);
var med = H[ch];
var val = f.seg.Query(pos[from], pos[med.light.from] + 1);
var val2 = Query(med.light.to, to);
return val + val2;
}
}
public int[] A, B;
int N;
List<Edge>[] G;
List<Chain> H = new List<Chain>();
int[] subTreeSize;
int[] par;
int[] pos;
int[] depth;
int[] ord;
Chain[] go;
int[,] hlpar;
public HLTreeGraph(int n)
{
N = n;
G = Enumerate(n, x => new List<Edge>());
subTreeSize = new int[n];
pos = new int[n];
depth = new int[n];
par = new int[n];
go = new Chain[n];
ord = new int[n];
}
public void AddEdge(int f, int t)
{
G[f].Add(new Edge(f, t));
G[t].Add(new Edge(t, f));
}
#region impl
public void Build(int root)
{
ComputeSubTreeSize(root);
Decomposite(new Edge(-1, root), -1, 0, 0);
BuildHLLCA();
}
public void ComputeSubTreeSize(int root)
{
var ord = new int[N];
par[root] = -1;
depth[root] = 0;
var ptr = 0;
var last = 0;
ord[last++] = root;
while (ptr < last)
{
var p = ord[ptr++];
foreach (var to in G[p])
{
if (to.to != par[p])
{
par[to.to] = p;
ord[last++] = to.to;
}
}
}
for (int i = N - 1; i > 0; i--)
{
subTreeSize[i] += 1;
subTreeSize[par[i]] += subTreeSize[i];
}
}
public void Decomposite(Edge light, int prevId, int d, int lv)
{
var node = new Chain() { light = light, id = H.Count, par = prevId, depth = lv };
H.Add(node);
var prev = light.from;
var cur = light.to;
while (cur != prev)
{
var next = cur;
var max = 0;
depth[cur] = d;
par[cur] = prev;
go[cur] = node;
pos[cur] = node.heavy.Count;
foreach (var to in G[cur])
{
var t = To(to);
if (t != prev) max = Math.Max(max, subTreeSize[t]);
}
foreach (var to in G[cur])
{
var t = To(to);
if (t == prev) continue;
if (max == subTreeSize[t])
{
//Debug.WriteLine("{0}->{1}", cur, t);
max = 1 << 30;
next = t;
node.heavy.Add(to);
}
else Decomposite(to, node.id, d + 1, lv + 1);
}
prev = cur;
cur = next;
d++;
}
node.init(this);
}
void BuildHLLCA()
{
hlpar = new int[8, H.Count];
for (int k = 0; k < 7; k++)
for (int v = 0; v < H.Count; v++)
hlpar[k, v] = -1;
for (int i = 0; i < H.Count; i++)
hlpar[0, i] = H[i].par;
for (int k = 0; k < 7; k++)
{
for (int v = 0; v < H.Count; v++)
if (hlpar[k, v] < 0) hlpar[k + 1, v] = -1;
else hlpar[k + 1, v] = hlpar[k, hlpar[k, v]];
}
}
public int GetAncestorAt(Chain v, int d)
{
if (v.depth < d)
throw new Exception();
for (int i = 0; i < 8; i++)
if ((((v.depth - d) >> i) & 1) == 1)
v = H[hlpar[i, v.id]];
return v.id;
}
public int To(Edge t) { return t.to; }
public int GetLCA(int u, int v)
{
while (go[u].id != go[v].id)
{
if (go[u].depth < go[v].depth) v = go[v].par;
else u = go[u].par;
}
if (depth[u] <= depth[v]) return u;
else return v;
}
static T[] Enumerate<T>(int n, Func<int, T> f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; }
#endregion
}
public class Chain
{
public Edge light;
public List<Edge> heavy = new List<Edge>();
public int par;
public int depth;
public int id;
public LazyRangeAddTree seg;
public void init(HLTreeGraph G)
{
var a = new int[heavy.Count + 1];
var b = new int[heavy.Count + 1];
a[0] += G.A[light.to];
b[0] = G.B[light.to];
for (int i = 0; i < heavy.Count; i++)
{
a[i + 1] += G.A[heavy[i].to];
b[i + 1] += G.B[heavy[i].to];
}
seg = new LazyRangeAddTree(heavy.Count + 1, a, b);
}
public override string ToString()
{
var s = new List<int>();
s.Add(light.from);
s.Add(light.to);
foreach (var e in heavy)
s.Add(e.to);
return s.AsJoinedString("->");
}
}
#endregion
#region TreeEdge
public struct Edge
{
public int from, to;
public Edge(int f, int t)
{
from = f; to = t;
}
public override string ToString()
{
return string.Format("{0}->{1}", from, to);
}
}
#endregion
#region LazyRangeAdd
public class LazyRangeAddTree
{
int n;
ModInteger[] sum, add, lazy;
public LazyRangeAddTree(int size, int[] a, int[] b)
{
n = 1;
while (n < size)
n <<= 1;
add = new ModInteger[n << 1];
sum = new ModInteger[n << 1];
for (int i = 0; i < a.Length; i++)
{
add[i + n] += b[i];
sum[i + n] += a[i];
}
lazy = new ModInteger[n << 1];
for (int i = n - 1; i > 0; i--)
{
add[i] = add[i << 1] + add[(i << 1) + 1];
sum[i] = sum[i << 1] + sum[(i << 1) + 1];
}
}
private void lazyEval(int k, int a, int b)
{
if (lazy[k].num == 0)
return;
Add(a, (a + b) >> 1, lazy[k].num, k << 1, a, (a + b) >> 1);
Add((a + b) >> 1, b, lazy[k].num, (k << 1) + 1, (a + b) >> 1, b);
lazy[k] = 0;
}
private void eval(int k)
{
int l = k << 1, r = (k << 1) + 1;
sum[k] = sum[l] + sum[r];
}
public void Add(int a, int b, long v)
{
Add(a, b, v, 1, 0, n);
}
private void Add(int a, int b, long v, int k, int l, int r)
{
if (r <= a || b <= l)
return;
else if (a <= l && r <= b)
{
lazy[k] += v;
sum[k] += add[k] * v;
}
else
{
lazyEval(k, l, r);
Add(a, b, v, k << 1, l, (l + r) >> 1);
Add(a, b, v, (k << 1) + 1, (l + r) >> 1, r);
eval(k);
}
}
public ModInteger Query(int a, int b) { return Query(a, b, 1, 0, n); }
private ModInteger Query(int a, int b, int k, int l, int r)
{
if (r <= a || b <= l)
return 0;
if (a <= l && r <= b)
return sum[k];
else
{
lazyEval(k, l, r);
var vl = Query(a, b, k << 1, l, (l + r) >> 1);
var vr = Query(a, b, (k << 1) + 1, (l + r) >> 1, r);
eval(k);
return vl + vr;
}
}
}
#endregion