結果
| 問題 |
No.5007 Steiner Space Travel
|
| コンテスト | |
| ユーザー |
 takytank
|
| 提出日時 | 2022-07-30 16:19:22 |
| 言語 | C# (.NET 8.0.404) |
| 結果 |
AC
|
| 実行時間 | 460 ms / 1,000 ms |
| コード長 | 36,660 bytes |
| コンパイル時間 | 8,171 ms |
| 実行使用メモリ | 167,220 KB |
| スコア | 7,975,557 |
| 最終ジャッジ日時 | 2022-07-30 16:19:47 |
| 合計ジャッジ時間 | 22,263 ms |
|
ジャッジサーバーID （参考情報） |
judge11 / judge12 |
| 純コード判定しない問題か言語 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| other | AC * 30 |
コンパイルメッセージ
Determining projects to restore... Restored /home/judge/data/code/main.csproj (in 111 ms). .NET 向け Microsoft (R) Build Engine バージョン 17.0.0-preview-21470-01+cb055d28f Copyright (C) Microsoft Corporation.All rights reserved. プレビュー版の .NET を使用しています。https://aka.ms/dotnet-core-preview をご覧ください main -> /home/judge/data/code/bin/Release/net6.0/main.dll main -> /home/judge/data/code/bin/Release/net6.0/publish/
ソースコード
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Numerics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
namespace YukiCoder
{
class Program
{
[MethodImpl(MethodImplOptions.AggressiveOptimization)]
static void Main()
{
#if DEBUG
object locker = new object();
long sum = 0;
int size = 100;
bool parallel = true;
if (parallel) {
Parallel.For(0, size, i => {
var score = Run(i);
lock (locker) {
Console.WriteLine($"{i:d4}: {score:d6}");
Console.Out.Flush();
sum += score;
}
});
} else {
for (int i = 0; i < size; i++) {
var score = Run(i);
lock (locker) {
Console.WriteLine($"{i:d4}: {score:d6}");
Console.Out.Flush();
sum += score;
}
}
}
sum /= size / 100;
Console.WriteLine("");
Console.WriteLine($"sum: {sum}");
Console.Out.Flush();
#else
Run(-1);
#endif
}
private static long Run(int number)
{
var sw = new Stopwatch();
sw.Start();
bool isDebug = false;
#if DEBUG
using var cin = number >= 0
? new Scanner(@$"D:\yukico\score002\input\{number:d4}.txt")
: new Scanner();
isDebug = true;
#else
using var cin = new Scanner();
#endif
var (n, m) = cin.Int2();
var planets = new (int x, int y)[n];
for (int i = 0; i < n; i++) {
planets[i] = cin.Int2();
}
var stations = new (int x, int y)[m];
var root = new List<(int t, int i)>();
for (int i = 0; i < n; i++) {
root.Add((1, i));
}
//root.Add((1, 1));
var opt = new TwoOpt<(int t, int i)>(
root.AsSpan(),
true,
(x, y) => CalculateOne(x, y, planets, stations));
opt.InitializeByNearestNeighbour();
while (sw.ElapsedMilliseconds < 400) {
opt.Optimize();
}
root = opt.Array.ToList();
for (int i = 0; i < m; i++) {
int mi = 0;
long max = 0;
for (int j = 0; j < root.Count - 1; j++) {
if (root[j].t == 2 || root[j + 1].t == 2) {
continue;
}
var tempS = CalculateOne(root[j], root[j + 1], planets, stations);
if (tempS > max) {
max = tempS;
mi = j;
}
}
var p = root[mi];
var q = root[mi + 1];
int xx = (planets[p.i].x + planets[q.i].x) / 2;
int yy = (planets[p.i].y + planets[q.i].y) / 2;
stations[i] = (xx, yy);
var addList = new HashSet<int>();
addList.Add(mi);
for (int j = 0; j < root.Count - 1; j++) {
if (j == mi) {
continue;
}
var before = CalculateOne(root[j], root[j + 1], planets, stations);
var after = CalculateOne(root[j], (2, i), planets, stations)
+ CalculateOne((2, i), root[j + 1], planets, stations);
if (after < before) {
addList.Add(j);
}
}
var nextRoot = new List<(int t, int i)>();
for (int j = 0; j < root.Count; j++) {
nextRoot.Add(root[j]);
if (addList.Contains(j)) {
nextRoot.Add((2, i));
}
}
root = nextRoot;
}
if (isDebug == false) {
for (int i = 0; i < m; i++) {
Console.WriteLine($"{stations[i].x} {stations[i].y}");
}
Console.WriteLine(root.Count);
foreach (var (t, i) in root) {
Console.WriteLine($"{t} {i + 1}");
}
} else {
var sb = new StringBuilder();
for (int i = 0; i < m; i++) {
sb.AppendLine($"{stations[i].x} {stations[i].y}");
}
sb.AppendLine(root.Count.ToString());
foreach (var (t, i) in root) {
sb.AppendLine($"{t} {i + 1}");
}
cin.Save(sb.ToString());
}
long score = Calculate(root, planets, stations);
return score;
}
private static long CalculateOne(
(int t, int i) r1,
(int t, int i) r2,
(int x, int y)[] platents,
(int x, int y)[] stations)
{
var (t1, i1) = r1;
var (t2, i2) = r2;
var (x1, y1) = t1 == 1 ? platents[i1] : stations[i1];
var (x2, y2) = t2 == 1 ? platents[i2] : stations[i2];
long dx = x1 - x2;
long dy = y1 - y2;
long d = dx * dx + dy * dy;
long alpha = t1 != t2
? 5
: t1 == 1 ? 25 : 1;
return d * alpha;
}
private static long Calculate(
List<(int t, int i)> root,
(int x, int y)[] planets,
(int x, int y)[] stations)
{
long s = 0;
int k = root.Count;
for (int i = 0; i < k; i++) {
long temp = CalculateOne(root[i], root[(i + 1) % k], planets, stations);
s += temp;
}
long score = (long)Math.Round(1000000000L / (1000 + Math.Sqrt(s)));
return score;
}
}
public class TwoOpt<T>
{
private readonly int _n;
private readonly int _m;
private readonly T[] _array;
private readonly Func<T, T, long> _getCost;
private readonly Random _rnd = new Random();
public T this[int i] => _array[i];
public T[] Array => _array;
public TwoOpt(
ReadOnlySpan<T> src,
bool isRing,
Func<T, T, long> getCost)
{
_n = src.Length;
_getCost = getCost;
_m = isRing ? _n + 1 : _n;
_array = new T[_m];
for (int i = 0; i < _n; i++) {
_array[i] = src[i];
}
if (isRing) {
_array[_n] = _array[0];
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void InitializeByNearestNeighbour() => InitializeByNearestNeighbour(0, _n);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void InitializeByNearestNeighbour(int left, int right)
{
for (int i = left + 1; i < right; i++) {
long min = long.MaxValue;
int minIndex = 0;
for (int j = i; j < right; j++) {
long cost = _getCost(_array[i - 1], _array[j]);
if (cost < min) {
min = cost;
minIndex = j;
}
}
(_array[minIndex], _array[i]) = (_array[i], _array[minIndex]);
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Optimize() => Optimize(1, 0, _m);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Optimize(int count) => Optimize(count, 0, _m);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Optimize(int count, int left, int right)
{
for (int k = 0; k < count; k++) {
int i = _rnd.Next(left, right - 1);
int j = _rnd.Next(left + 1, right);
while (i + 1 == j) {
j = _rnd.Next(left + 1, right);
}
if (j < i) {
(i, j) = (j, i);
}
long before = _getCost(_array[i], _array[i + 1])
+ _getCost(_array[j - 1], _array[j]);
long after = _getCost(_array[i], _array[j - 1])
+ _getCost(_array[i + 1], _array[j]);
if (after < before) {
++i;
--j;
while (i < j) {
(_array[i], _array[j]) = (_array[j], _array[i]);
++i;
--j;
}
}
}
}
public (long delta, int targetIndex) EstimateExchange(int removeIndex, T newValue)
=> EstimateExchange(removeIndex, newValue, 1, _m - 1);
public (long delta, int targetIndex) EstimateExchange(
int removeIndex, T newValue, int left, int right)
{
long after = long.MaxValue;
int target = 1;
for (int i = left; i <= right; i++) {
int l = i - 1;
if (l == removeIndex) {
l--;
}
int r = i;
if (r == removeIndex) {
r++;
}
long tempAfter = _getCost(_array[l], newValue) + _getCost(newValue, _array[r]);
if (tempAfter < after) {
after = tempAfter;
target = i;
}
}
if (removeIndex == target || removeIndex == target - 1) {
long before = _getCost(_array[removeIndex - 1], _array[removeIndex])
+ _getCost(_array[removeIndex], _array[removeIndex + 1]);
return (after - before, target);
} else {
long delta = 0;
delta -= _getCost(_array[removeIndex - 1], _array[removeIndex]);
delta -= _getCost(_array[removeIndex], _array[removeIndex + 1]);
delta += _getCost(_array[removeIndex - 1], _array[removeIndex + 1]);
delta -= _getCost(_array[target - 1], _array[target]);
delta += after;
return (delta, target);
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Exchange(int removeIndex, T newValue, bool forced)
=> Exchange(removeIndex, newValue, 1, _m - 1, forced);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Exchange(int removeIndex, T newValue, int left, int right, bool forced)
{
var (delta, target) = EstimateExchange(removeIndex, newValue, left, right);
if (forced || delta < 0) {
Exchange(removeIndex, target, newValue);
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Exchange(int removeIndex, int insertIndex, T newValue)
{
if (removeIndex < insertIndex) {
for (int i = removeIndex; i < insertIndex - 1; i++) {
_array[i] = _array[i + 1];
}
_array[insertIndex - 1] = newValue;
} else if (removeIndex > insertIndex) {
for (int i = removeIndex - 1; i >= insertIndex; i--) {
_array[i + 1] = _array[i];
}
_array[insertIndex] = newValue;
} else {
_array[removeIndex] = newValue;
}
}
}
public struct BitFlag
{
public static BitFlag Begin() => 0;
public static BitFlag End(int bitCount) => 1 << bitCount;
public static BitFlag FromBit(int bitNumber) => 1 << bitNumber;
public static BitFlag Fill(int count) => (1 << count) - 1;
public static IEnumerable<BitFlag> All(int n)
{
for (var f = Begin(); f < End(n); ++f) {
yield return f;
}
}
private readonly int flags_;
public int Flag => flags_;
public bool this[int bitNumber] => (flags_ & (1 << bitNumber)) != 0;
public BitFlag(int flags) { flags_ = flags; }
public bool Has(BitFlag target) => (flags_ & target.flags_) == target.flags_;
public bool Has(int target) => (flags_ & target) == target;
public bool HasBit(int bitNumber) => (flags_ & (1 << bitNumber)) != 0;
public BitFlag OrBit(int bitNumber) => flags_ | (1 << bitNumber);
public BitFlag AndBit(int bitNumber) => flags_ & (1 << bitNumber);
public BitFlag XorBit(int bitNumber) => flags_ ^ (1 << bitNumber);
public BitFlag ComplementOf(BitFlag sub) => flags_ ^ sub.flags_;
public int PopCount() => BitOperations.PopCount((uint)flags_);
public static BitFlag operator ++(BitFlag src) => new BitFlag(src.flags_ + 1);
public static BitFlag operator --(BitFlag src) => new BitFlag(src.flags_ - 1);
public static BitFlag operator |(BitFlag lhs, BitFlag rhs)
=> new BitFlag(lhs.flags_ | rhs.flags_);
public static BitFlag operator |(BitFlag lhs, int rhs)
=> new BitFlag(lhs.flags_ | rhs);
public static BitFlag operator |(int lhs, BitFlag rhs)
=> new BitFlag(lhs | rhs.flags_);
public static BitFlag operator &(BitFlag lhs, BitFlag rhs)
=> new BitFlag(lhs.flags_ & rhs.flags_);
public static BitFlag operator &(BitFlag lhs, int rhs)
=> new BitFlag(lhs.flags_ & rhs);
public static BitFlag operator &(int lhs, BitFlag rhs)
=> new BitFlag(lhs & rhs.flags_);
public static BitFlag operator ^(BitFlag lhs, BitFlag rhs)
=> new BitFlag(lhs.flags_ ^ rhs.flags_);
public static BitFlag operator ^(BitFlag lhs, int rhs)
=> new BitFlag(lhs.flags_ ^ rhs);
public static BitFlag operator ^(int lhs, BitFlag rhs)
=> new BitFlag(lhs ^ rhs.flags_);
public static BitFlag operator <<(BitFlag bit, int shift) => bit.flags_ << shift;
public static BitFlag operator >>(BitFlag bit, int shift) => bit.flags_ >> shift;
public static bool operator <(BitFlag lhs, BitFlag rhs) => lhs.flags_ < rhs.flags_;
public static bool operator <(BitFlag lhs, int rhs) => lhs.flags_ < rhs;
public static bool operator <(int lhs, BitFlag rhs) => lhs < rhs.flags_;
public static bool operator >(BitFlag lhs, BitFlag rhs) => lhs.flags_ > rhs.flags_;
public static bool operator >(BitFlag lhs, int rhs) => lhs.flags_ > rhs;
public static bool operator >(int lhs, BitFlag rhs) => lhs > rhs.flags_;
public static bool operator <=(BitFlag lhs, BitFlag rhs) => lhs.flags_ <= rhs.flags_;
public static bool operator <=(BitFlag lhs, int rhs) => lhs.flags_ <= rhs;
public static bool operator <=(int lhs, BitFlag rhs) => lhs <= rhs.flags_;
public static bool operator >=(BitFlag lhs, BitFlag rhs) => lhs.flags_ >= rhs.flags_;
public static bool operator >=(BitFlag lhs, int rhs) => lhs.flags_ >= rhs;
public static bool operator >=(int lhs, BitFlag rhs) => lhs >= rhs.flags_;
public static implicit operator BitFlag(int t) => new BitFlag(t);
public static implicit operator int(BitFlag t) => t.flags_;
public override string ToString() => $"{Convert.ToString(flags_, 2).PadLeft(32, '0')} ({flags_})";
public SubBitsEnumerator SubBits => new SubBitsEnumerator(flags_);
public struct SubBitsEnumerator : IEnumerable<BitFlag>
{
private readonly int flags_;
public SubBitsEnumerator(int flags)
{
flags_ = flags;
}
IEnumerator<BitFlag> IEnumerable<BitFlag>.GetEnumerator() => new Enumerator(flags_);
IEnumerator IEnumerable.GetEnumerator() => new Enumerator(flags_);
public Enumerator GetEnumerator() => new Enumerator(flags_);
public struct Enumerator : IEnumerator<BitFlag>
{
private readonly int src_;
public BitFlag Current { get; private set; }
object IEnumerator.Current => Current;
public Enumerator(int flags)
{
src_ = flags;
Current = flags + 1;
}
public void Dispose() { }
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public bool MoveNext() => (Current = --Current & src_) > 0;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Reset() => Current = src_;
}
}
}
public class HashMap<TKey, TValue> : Dictionary<TKey, TValue>
{
public static HashMap<TKey, TValue> Merge(
HashMap<TKey, TValue> src1,
HashMap<TKey, TValue> src2,
Func<TValue, TValue, TValue> mergeValues)
{
if (src1.Count < src2.Count) {
(src1, src2) = (src2, src1);
}
foreach (var key in src2.Keys) {
src1[key] = mergeValues(src1[key], src2[key]);
}
return src1;
}
private readonly Func<TKey, TValue> initialzier_;
public HashMap(Func<TKey, TValue> initialzier)
: base()
{
initialzier_ = initialzier;
}
public HashMap(Func<TKey, TValue> initialzier, int capacity)
: base(capacity)
{
initialzier_ = initialzier;
}
new public TValue this[TKey key]
{
get
{
if (TryGetValue(key, out TValue value)) {
return value;
} else {
var init = initialzier_(key);
base[key] = init;
return init;
}
}
set { base[key] = value; }
}
public HashMap<TKey, TValue> Merge(
HashMap<TKey, TValue> src,
Func<TValue, TValue, TValue> mergeValues)
{
foreach (var key in src.Keys) {
this[key] = mergeValues(this[key], src[key]);
}
return this;
}
}
public class JagList2<T> where T : struct
{
private readonly int n_;
private readonly List<T>[] tempValues_;
private T[][] values_;
public int Count => n_;
public List<T>[] Raw => tempValues_;
public T[][] Values => values_;
public T[] this[int index] => values_[index];
public JagList2(int n)
{
n_ = n;
tempValues_ = new List<T>[n];
for (int i = 0; i < n; ++i) {
tempValues_[i] = new List<T>();
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Add(int i, T value) => tempValues_[i].Add(value);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Build()
{
values_ = new T[n_][];
for (int i = 0; i < values_.Length; ++i) {
values_[i] = tempValues_[i].ToArray();
}
}
}
public class DijkstraQ
{
private int count_ = 0;
private long[] distanceHeap_;
private int[] vertexHeap_;
public int Count => count_;
public DijkstraQ()
{
distanceHeap_ = new long[8];
vertexHeap_ = new int[8];
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Enqueue(long distance, int v)
{
if (distanceHeap_.Length == count_) {
var newDistanceHeap = new long[distanceHeap_.Length << 1];
var newVertexHeap = new int[vertexHeap_.Length << 1];
Unsafe.CopyBlock(
ref Unsafe.As<long, byte>(ref newDistanceHeap[0]),
ref Unsafe.As<long, byte>(ref distanceHeap_[0]),
(uint)(8 * count_));
Unsafe.CopyBlock(
ref Unsafe.As<int, byte>(ref newVertexHeap[0]),
ref Unsafe.As<int, byte>(ref vertexHeap_[0]),
(uint)(4 * count_));
distanceHeap_ = newDistanceHeap;
vertexHeap_ = newVertexHeap;
}
ref var dRef = ref distanceHeap_[0];
ref var vRef = ref vertexHeap_[0];
Unsafe.Add(ref dRef, count_) = distance;
Unsafe.Add(ref vRef, count_) = v;
++count_;
int c = count_ - 1;
while (c > 0) {
int p = (c - 1) >> 1;
var tempD = Unsafe.Add(ref dRef, p);
if (tempD <= distance) {
break;
} else {
Unsafe.Add(ref dRef, c) = tempD;
Unsafe.Add(ref vRef, c) = Unsafe.Add(ref vRef, p);
c = p;
}
}
Unsafe.Add(ref dRef, c) = distance;
Unsafe.Add(ref vRef, c) = v;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (long distance, int v) Dequeue()
{
ref var dRef = ref distanceHeap_[0];
ref var vRef = ref vertexHeap_[0];
(long distance, int v) ret = (dRef, vRef);
int n = count_ - 1;
var distance = Unsafe.Add(ref dRef, n);
var vertex = Unsafe.Add(ref vRef, n);
int p = 0;
int c = (p << 1) + 1;
while (c < n) {
if (c != n - 1 && Unsafe.Add(ref dRef, c + 1) < Unsafe.Add(ref dRef, c)) {
++c;
}
var tempD = Unsafe.Add(ref dRef, c);
if (distance > tempD) {
Unsafe.Add(ref dRef, p) = tempD;
Unsafe.Add(ref vRef, p) = Unsafe.Add(ref vRef, c);
p = c;
c = (p << 1) + 1;
} else {
break;
}
}
Unsafe.Add(ref dRef, p) = distance;
Unsafe.Add(ref vRef, p) = vertex;
--count_;
return ret;
}
}
public struct ModInt
{
//public const long P = 1000000007;
public const long P = 998244353;
//public const long P = 2;
public const long ROOT = 3;
// (924844033, 5)
// (998244353, 3)
// (1012924417, 5)
// (167772161, 3)
// (469762049, 3)
// (1224736769, 3)
private long value_;
public static ModInt New(long value, bool mods) => new ModInt(value, mods);
public ModInt(long value) => value_ = value;
public ModInt(long value, bool mods)
{
if (mods) {
value %= P;
if (value < 0) {
value += P;
}
}
value_ = value;
}
public static ModInt operator +(ModInt lhs, ModInt rhs)
{
lhs.value_ = (lhs.value_ + rhs.value_) % P;
return lhs;
}
public static ModInt operator +(long lhs, ModInt rhs)
{
rhs.value_ = (lhs + rhs.value_) % P;
return rhs;
}
public static ModInt operator +(ModInt lhs, long rhs)
{
lhs.value_ = (lhs.value_ + rhs) % P;
return lhs;
}
public static ModInt operator -(ModInt lhs, ModInt rhs)
{
lhs.value_ = (P + lhs.value_ - rhs.value_) % P;
return lhs;
}
public static ModInt operator -(long lhs, ModInt rhs)
{
rhs.value_ = (P + lhs - rhs.value_) % P;
return rhs;
}
public static ModInt operator -(ModInt lhs, long rhs)
{
lhs.value_ = (P + lhs.value_ - rhs) % P;
return lhs;
}
public static ModInt operator *(ModInt lhs, ModInt rhs)
{
lhs.value_ = lhs.value_ * rhs.value_ % P;
return lhs;
}
public static ModInt operator *(long lhs, ModInt rhs)
{
rhs.value_ = lhs * rhs.value_ % P;
return rhs;
}
public static ModInt operator *(ModInt lhs, long rhs)
{
lhs.value_ = lhs.value_ * rhs % P;
return lhs;
}
public static ModInt operator /(ModInt lhs, ModInt rhs)
=> lhs * Inverse(rhs);
public static implicit operator ModInt(long n) => new ModInt(n, true);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ModInt Inverse(ModInt value) => Pow(value, P - 2);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ModInt Pow(ModInt value, long k) => Pow(value.value_, k);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ModInt Pow(long value, long k)
{
long ret = 1;
while (k > 0) {
if ((k & 1) != 0) {
ret = ret * value % P;
}
value = value * value % P;
k >>= 1;
}
return new ModInt(ret);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public long ToLong() => value_;
public override string ToString() => value_.ToString();
}
public static class Helper
{
public static long INF => 1L << 50;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T Clamp<T>(this T value, T min, T max) where T : struct, IComparable<T>
{
if (value.CompareTo(min) <= 0) {
return min;
}
if (value.CompareTo(max) >= 0) {
return max;
}
return value;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void UpdateMin<T>(this ref T target, T value) where T : struct, IComparable<T>
=> target = target.CompareTo(value) > 0 ? value : target;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void UpdateMin<T>(this ref T target, T value, Action<T> onUpdated)
where T : struct, IComparable<T>
{
if (target.CompareTo(value) > 0) {
target = value;
onUpdated(value);
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void UpdateMax<T>(this ref T target, T value) where T : struct, IComparable<T>
=> target = target.CompareTo(value) < 0 ? value : target;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void UpdateMax<T>(this ref T target, T value, Action<T> onUpdated)
where T : struct, IComparable<T>
{
if (target.CompareTo(value) < 0) {
target = value;
onUpdated(value);
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static long BinarySearchOKNG(long ok, long ng, Func<long, bool> satisfies)
{
while (ng - ok > 1) {
long mid = (ok + ng) / 2;
if (satisfies(mid)) {
ok = mid;
} else {
ng = mid;
}
}
return ok;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static long BinarySearchNGOK(long ng, long ok, Func<long, bool> satisfies)
{
while (ok - ng > 1) {
long mid = (ok + ng) / 2;
if (satisfies(mid)) {
ok = mid;
} else {
ng = mid;
}
}
return ok;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[] Array1<T>(int n, T initialValue) where T : struct
=> new T[n].Fill(initialValue);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[] Array1<T>(int n, Func<int, T> initializer)
=> Enumerable.Range(0, n).Select(x => initializer(x)).ToArray();
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[] Fill<T>(this T[] array, T value)
where T : struct
{
array.AsSpan().Fill(value);
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[,] Array2<T>(int n, int m, T initialValule) where T : struct
=> new T[n, m].Fill(initialValule);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[,] Array2<T>(int n, int m, Func<int, int, T> initializer)
{
var array = new T[n, m];
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
array[i, j] = initializer(i, j);
}
}
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[,] Fill<T>(this T[,] array, T initialValue)
where T : struct
{
MemoryMarshal.CreateSpan<T>(ref array[0, 0], array.Length).Fill(initialValue);
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Span<T> AsSpan<T>(this T[,] array, int i)
=> MemoryMarshal.CreateSpan<T>(ref array[i, 0], array.GetLength(1));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[,,] Array3<T>(int n1, int n2, int n3, T initialValue)
where T : struct
=> new T[n1, n2, n3].Fill(initialValue);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[,,] Fill<T>(this T[,,] array, T initialValue)
where T : struct
{
MemoryMarshal.CreateSpan<T>(ref array[0, 0, 0], array.Length).Fill(initialValue);
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Span<T> AsSpan<T>(this T[,,] array, int i, int j)
=> MemoryMarshal.CreateSpan<T>(ref array[i, j, 0], array.GetLength(2));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[,,,] Array4<T>(int n1, int n2, int n3, int n4, T initialValue)
where T : struct
=> new T[n1, n2, n3, n4].Fill(initialValue);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[,,,] Fill<T>(this T[,,,] array, T initialValue)
where T : struct
{
MemoryMarshal.CreateSpan<T>(ref array[0, 0, 0, 0], array.Length).Fill(initialValue);
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Span<T> AsSpan<T>(this T[,,,] array, int i, int j, int k)
=> MemoryMarshal.CreateSpan<T>(ref array[i, j, k, 0], array.GetLength(3));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static T[] Merge<T>(ReadOnlySpan<T> first, ReadOnlySpan<T> second) where T : IComparable<T>
{
var ret = new T[first.Length + second.Length];
int p = 0;
int q = 0;
while (p < first.Length || q < second.Length) {
if (p == first.Length) {
ret[p + q] = second[q];
q++;
continue;
}
if (q == second.Length) {
ret[p + q] = first[p];
p++;
continue;
}
if (first[p].CompareTo(second[q]) < 0) {
ret[p + q] = first[p];
p++;
} else {
ret[p + q] = second[q];
q++;
}
}
return ret;
}
private static readonly int[] delta4_ = { 1, 0, -1, 0, 1 };
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static IEnumerable<(int i, int j)> Adjacence4(int i, int j, int imax, int jmax)
{
for (int dn = 0; dn < 4; ++dn) {
int d4i = i + delta4_[dn];
int d4j = j + delta4_[dn + 1];
if ((uint)d4i < (uint)imax && (uint)d4j < (uint)jmax) {
yield return (d4i, d4j);
}
}
}
private static readonly int[] delta8_ = { 1, 0, -1, 0, 1, 1, -1, -1, 1 };
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static IEnumerable<(int i, int j)> Adjacence8(int i, int j, int imax, int jmax)
{
for (int dn = 0; dn < 8; ++dn) {
int d8i = i + delta8_[dn];
int d8j = j + delta8_[dn + 1];
if ((uint)d8i < (uint)imax && (uint)d8j < (uint)jmax) {
yield return (d8i, d8j);
}
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static IEnumerable<int> SubBitsOf(int bit)
{
for (int sub = bit; sub > 0; sub = --sub & bit) {
yield return sub;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string Reverse(string src)
{
var chars = src.ToCharArray();
for (int i = 0, j = chars.Length - 1; i < j; ++i, --j) {
var tmp = chars[i];
chars[i] = chars[j];
chars[j] = tmp;
}
return new string(chars);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string Exchange(string src, char a, char b)
{
var chars = src.ToCharArray();
for (int i = 0; i < chars.Length; i++) {
if (chars[i] == a) {
chars[i] = b;
} else if (chars[i] == b) {
chars[i] = a;
}
}
return new string(chars);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void Swap(this string str, int i, int j)
{
var span = str.AsWriteableSpan();
(span[i], span[j]) = (span[j], span[i]);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static char Replace(this string str, int index, char c)
{
var span = str.AsWriteableSpan();
char old = span[index];
span[index] = c;
return old;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Span<char> AsWriteableSpan(this string str)
{
var span = str.AsSpan();
return MemoryMarshal.CreateSpan(ref MemoryMarshal.GetReference(span), span.Length);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string Join<T>(this IEnumerable<T> values, string separator = "")
=> string.Join(separator, values);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string JoinNL<T>(this IEnumerable<T> values)
=> string.Join(Environment.NewLine, values);
}
public static class Extensions
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Span<T> AsSpan<T>(this List<T> list)
{
return Unsafe.As<FakeList<T>>(list).Array.AsSpan(0, list.Count);
}
private class FakeList<T>
{
public T[] Array = null;
}
}
public class Scanner : IDisposable
{
private const int BUFFER_SIZE = 1024;
private const int ASCII_SPACE = 32;
private const int ASCII_CHAR_BEGIN = 33;
private const int ASCII_CHAR_END = 126;
private readonly string filePath_;
private readonly Stream stream_;
private readonly byte[] buf_ = new byte[BUFFER_SIZE];
private int length_ = 0;
private int index_ = 0;
private bool isEof_ = false;
public Scanner(string file = "")
{
if (string.IsNullOrWhiteSpace(file)) {
stream_ = Console.OpenStandardInput();
} else {
filePath_ = file;
stream_ = new FileStream(file, FileMode.Open);
}
Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) {
AutoFlush = false
});
}
public void Dispose()
{
Console.Out.Flush();
stream_.Dispose();
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public string NextLine()
{
var sb = new StringBuilder();
for (var b = Char(); b >= ASCII_SPACE && b <= ASCII_CHAR_END; b = (char)Read()) {
sb.Append(b);
}
return sb.ToString();
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public char Char()
{
byte b;
do {
b = Read();
} while (b < ASCII_CHAR_BEGIN || ASCII_CHAR_END < b);
return (char)b;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public string String()
{
var sb = new StringBuilder();
for (var b = Char(); b >= ASCII_CHAR_BEGIN && b <= ASCII_CHAR_END; b = (char)Read()) {
sb.Append(b);
}
return sb.ToString();
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public string[] ArrayString(int length)
{
var array = new string[length];
for (int i = 0; i < length; ++i) {
array[i] = String();
}
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public int Int() => (int)Long();
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public int Int(int offset) => Int() + offset;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (int, int) Int2(int offset = 0)
=> (Int(offset), Int(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (int, int, int) Int3(int offset = 0)
=> (Int(offset), Int(offset), Int(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (int, int, int, int) Int4(int offset = 0)
=> (Int(offset), Int(offset), Int(offset), Int(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (int, int, int, int, int) Int5(int offset = 0)
=> (Int(offset), Int(offset), Int(offset), Int(offset), Int(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public int[] ArrayInt(int length, int offset = 0)
{
var array = new int[length];
for (int i = 0; i < length; ++i) {
array[i] = Int(offset);
}
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public long Long()
{
long ret = 0;
byte b;
bool ng = false;
do {
b = Read();
} while (b != '-' && (b < '0' || '9' < b));
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';
}
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public long Long(long offset) => Long() + offset;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (long, long) Long2(long offset = 0)
=> (Long(offset), Long(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (long, long, long) Long3(long offset = 0)
=> (Long(offset), Long(offset), Long(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (long, long, long, long) Long4(long offset = 0)
=> (Long(offset), Long(offset), Long(offset), Long(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (long, long, long, long, long) Long5(long offset = 0)
=> (Long(offset), Long(offset), Long(offset), Long(offset), Long(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public long[] ArrayLong(int length, long offset = 0)
{
var array = new long[length];
for (int i = 0; i < length; ++i) {
array[i] = Long(offset);
}
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public BigInteger Big() => new BigInteger(Long());
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public BigInteger Big(long offset) => Big() + offset;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (BigInteger, BigInteger) Big2(long offset = 0)
=> (Big(offset), Big(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (BigInteger, BigInteger, BigInteger) Big3(long offset = 0)
=> (Big(offset), Big(offset), Big(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (BigInteger, BigInteger, BigInteger, BigInteger) Big4(long offset = 0)
=> (Big(offset), Big(offset), Big(offset), Big(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (BigInteger, BigInteger, BigInteger, BigInteger, BigInteger) Big5(long offset = 0)
=> (Big(offset), Big(offset), Big(offset), Big(offset), Big(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public BigInteger[] ArrayBig(int length, long offset = 0)
{
var array = new BigInteger[length];
for (int i = 0; i < length; ++i) {
array[i] = Big(offset);
}
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public double Double() => double.Parse(String(), CultureInfo.InvariantCulture);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public double Double(double offset) => Double() + offset;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (double, double) Double2(double offset = 0)
=> (Double(offset), Double(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (double, double, double) Double3(double offset = 0)
=> (Double(offset), Double(offset), Double(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (double, double, double, double) Double4(double offset = 0)
=> (Double(offset), Double(offset), Double(offset), Double(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (double, double, double, double, double) Double5(double offset = 0)
=> (Double(offset), Double(offset), Double(offset), Double(offset), Double(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public double[] ArrayDouble(int length, double offset = 0)
{
var array = new double[length];
for (int i = 0; i < length; ++i) {
array[i] = Double(offset);
}
return array;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public decimal Decimal() => decimal.Parse(String(), CultureInfo.InvariantCulture);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public decimal Decimal(decimal offset) => Decimal() + offset;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (decimal, decimal) Decimal2(decimal offset = 0)
=> (Decimal(offset), Decimal(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (decimal, decimal, decimal) Decimal3(decimal offset = 0)
=> (Decimal(offset), Decimal(offset), Decimal(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (decimal, decimal, decimal, decimal) Decimal4(decimal offset = 0)
=> (Decimal(offset), Decimal(offset), Decimal(offset), Decimal(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public (decimal, decimal, decimal, decimal, decimal) Decimal5(decimal offset = 0)
=> (Decimal(offset), Decimal(offset), Decimal(offset), Decimal(offset), Decimal(offset));
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public decimal[] ArrayDecimal(int length, decimal offset = 0)
{
var array = new decimal[length];
for (int i = 0; i < length; ++i) {
array[i] = Decimal(offset);
}
return array;
}
private byte Read()
{
if (isEof_) {
throw new EndOfStreamException();
}
if (index_ >= length_) {
index_ = 0;
if ((length_ = stream_.Read(buf_, 0, BUFFER_SIZE)) <= 0) {
isEof_ = true;
return 0;
}
}
return buf_[index_++];
}
public void Save(string text)
{
if (string.IsNullOrWhiteSpace(filePath_)) {
return;
}
File.WriteAllText(filePath_ + "_output.txt", text);
}
}
}