結果
| 問題 |
No.1640 簡単な色塗り
|
| コンテスト | |
| ユーザー |
 yupiteru_kun
|
| 提出日時 | 2021-08-06 22:33:31 |
| 言語 | C# (.NET 8.0.404) |
| 結果 |
AC
|
| 実行時間 | 173 ms / 2,000 ms |
| コード長 | 11,067 bytes |
| コンパイル時間 | 15,132 ms |
| コンパイル使用メモリ | 167,376 KB |
| 実行使用メモリ | 51,712 KB |
| 最終ジャッジ日時 | 2024-06-29 15:38:47 |
| 合計ジャッジ時間 | 25,137 ms |
|
ジャッジサーバーID （参考情報） |
judge2 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 53 |
コンパイルメッセージ
復元対象のプロジェクトを決定しています... /home/judge/data/code/main.csproj を復元しました (95 ms)。 MSBuild のバージョン 17.9.6+a4ecab324 (.NET) main -> /home/judge/data/code/bin/Release/net8.0/main.dll main -> /home/judge/data/code/bin/Release/net8.0/publish/
ソースコード
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using static System.Math;
using System.Text;
using System.Threading;
using System.Globalization;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using Library;
namespace Program
{
public static class ProblemE
{
static bool SAIKI = false;
static public int numberOfRandomCases = 0;
static public void MakeTestCase(List<string> _input, List<string> _output, ref Func<string[], bool> _outputChecker)
{
}
static public void Solve()
{
var N = NN;
var AB = Repeat(0, N).Select(_ => new { A = NN - 1, B = NN - 1 }).ToArray();
var uf = new LIB_UnionFind<long>(Repeat(0L, N), (x, y) => x + y);
foreach (var item in AB)
{
uf.Unite(item.A, item.B);
uf.Set(item.A, uf.Calc(item.A) + 1);
}
var path = Repeat(0, N).Select(_ => new List<(long, long)>()).ToArray();
var jisu = new long[N];
for (var i = 0; i < N; ++i)
{
var item = AB[i];
jisu[item.A]++;
jisu[item.B]++;
path[item.A].Add((item.B, i));
path[item.B].Add((item.A, i));
}
for (var i = 0; i < N; ++i)
{
if (uf.Calc(i) < uf.Count(i))
{
Console.WriteLine("No");
return;
}
}
Console.WriteLine("Yes");
var q = new Queue<long>();
var done = new bool[N];
for (var i = 0; i < N; ++i)
{
if (jisu[i] == 1)
{
q.Enqueue(i);
done[i] = true;
}
}
var ans = new long[N];
ans.Fill(-1);
for (var i = 0; i <= N; ++i)
{
while (q.Count > 0)
{
var pop = q.Dequeue();
foreach (var item in path[pop])
{
if (ans[item.Item2] == -1)
{
ans[item.Item2] = pop;
if (--jisu[item.Item1] == 1)
{
q.Enqueue(item.Item1);
done[item.Item1] = true;
}
break;
}
}
}
if (i == N) break;
if (!done[i]) q.Enqueue(i);
}
for (var i = 0; i < N; ++i)
{
Console.WriteLine(ans[i] + 1);
}
}
class Printer : StreamWriter
{
public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } }
public Printer(Stream stream) : base(stream, new UTF8Encoding(false, true)) { base.AutoFlush = false; }
public Printer(Stream stream, Encoding encoding) : base(stream, encoding) { base.AutoFlush = false; }
}
static LIB_FastIO fastio = new LIB_FastIODebug();
static public void Main(string[] args) { if (args.Length == 0) { fastio = new LIB_FastIO(); Console.SetOut(new Printer(Console.OpenStandardOutput())); } if (SAIKI) { var t = new Thread(Solve, 134217728); t.Start(); t.Join(); } else Solve(); Console.Out.Flush(); }
static long NN => fastio.Long();
static double ND => fastio.Double();
static string NS => fastio.Scan();
static long[] NNList(long N) => Repeat(0, N).Select(_ => NN).ToArray();
static double[] NDList(long N) => Repeat(0, N).Select(_ => ND).ToArray();
static string[] NSList(long N) => Repeat(0, N).Select(_ => NS).ToArray();
static long Count<T>(this IEnumerable<T> x, Func<T, bool> pred) => Enumerable.Count(x, pred);
static IEnumerable<T> Repeat<T>(T v, long n) => Enumerable.Repeat<T>(v, (int)n);
static IEnumerable<int> Range(long s, long c) => Enumerable.Range((int)s, (int)c);
static IOrderedEnumerable<T> OrderByRand<T>(this IEnumerable<T> x) => Enumerable.OrderBy(x, _ => xorshift);
static IOrderedEnumerable<T> OrderBy<T>(this IEnumerable<T> x) => Enumerable.OrderBy(x.OrderByRand(), e => e);
static IOrderedEnumerable<T1> OrderBy<T1, T2>(this IEnumerable<T1> x, Func<T1, T2> selector) => Enumerable.OrderBy(x.OrderByRand(), selector);
static IOrderedEnumerable<T> OrderByDescending<T>(this IEnumerable<T> x) => Enumerable.OrderByDescending(x.OrderByRand(), e => e);
static IOrderedEnumerable<T1> OrderByDescending<T1, T2>(this IEnumerable<T1> x, Func<T1, T2> selector) => Enumerable.OrderByDescending(x.OrderByRand(), selector);
static IOrderedEnumerable<string> OrderBy(this IEnumerable<string> x) => x.OrderByRand().OrderBy(e => e, StringComparer.OrdinalIgnoreCase);
static IOrderedEnumerable<T> OrderBy<T>(this IEnumerable<T> x, Func<T, string> selector) => x.OrderByRand().OrderBy(selector, StringComparer.OrdinalIgnoreCase);
static IOrderedEnumerable<string> OrderByDescending(this IEnumerable<string> x) => x.OrderByRand().OrderByDescending(e => e, StringComparer.OrdinalIgnoreCase);
static IOrderedEnumerable<T> OrderByDescending<T>(this IEnumerable<T> x, Func<T, string> selector) => x.OrderByRand().OrderByDescending(selector, StringComparer.OrdinalIgnoreCase);
static string Join<T>(this IEnumerable<T> x, string separator = "") => string.Join(separator, x);
static uint xorshift { get { _xsi.MoveNext(); return _xsi.Current; } }
static IEnumerator<uint> _xsi = _xsc();
static IEnumerator<uint> _xsc() { uint x = 123456789, y = 362436069, z = 521288629, w = (uint)(DateTime.Now.Ticks & 0xffffffff); while (true) { var t = x ^ (x << 11); x = y; y = z; z = w; w = (w ^ (w >> 19)) ^ (t ^ (t >> 8)); yield return w; } }
static bool Chmax<T>(this ref T lhs, T rhs) where T : struct, IComparable<T> { if (lhs.CompareTo(rhs) < 0) { lhs = rhs; return true; } return false; }
static bool Chmin<T>(this ref T lhs, T rhs) where T : struct, IComparable<T> { if (lhs.CompareTo(rhs) > 0) { lhs = rhs; return true; } return false; }
static void Fill<T>(this T[] array, T value) => array.AsSpan().Fill(value);
static void Fill<T>(this T[,] array, T value) => MemoryMarshal.CreateSpan(ref array[0, 0], array.Length).Fill(value);
static void Fill<T>(this T[,,] array, T value) => MemoryMarshal.CreateSpan(ref array[0, 0, 0], array.Length).Fill(value);
static void Fill<T>(this T[,,,] array, T value) => MemoryMarshal.CreateSpan(ref array[0, 0, 0, 0], array.Length).Fill(value);
}
}
namespace Library {
class LIB_FastIO
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public LIB_FastIO() { str = Console.OpenStandardInput(); }
readonly Stream str;
readonly byte[] buf = new byte[2048];
int len, ptr;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
byte read()
{
if (ptr >= len)
{
ptr = 0;
if ((len = str.Read(buf, 0, 2048)) <= 0)
{
return 0;
}
}
return buf[ptr++];
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
char Char()
{
byte b = 0;
do b = read();
while (b < 33 || 126 < b);
return (char)b;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
virtual public string Scan()
{
var sb = new StringBuilder();
for (var b = Char(); b >= 33 && b <= 126; b = (char)read())
sb.Append(b);
return sb.ToString();
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
virtual public long Long()
{
long ret = 0; byte b = 0; var 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 << 3) + (ret << 1) + b - '0';
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
virtual public double Double() { return double.Parse(Scan(), CultureInfo.InvariantCulture); }
}
class LIB_FastIODebug : LIB_FastIO
{
Queue<string> param = new Queue<string>();
[MethodImpl(MethodImplOptions.AggressiveInlining)]
string NextString() { if (param.Count == 0) foreach (var item in Console.ReadLine().Split(' ')) param.Enqueue(item); return param.Dequeue(); }
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public LIB_FastIODebug() { }
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public override string Scan() => NextString();
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public override long Long() => long.Parse(NextString());
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public override double Double() => double.Parse(NextString());
}
class LIB_UnionFind<T>
{
int[] d;
T[] v;
Func<T, T, T> f;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public LIB_UnionFind(IEnumerable<T> s, Func<T, T, T> func)
{
v = s.ToArray();
d = Enumerable.Repeat(-1, v.Length).ToArray();
f = func;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public bool Unite(long x, long y)
{
x = Root(x);
y = Root(y);
if (x != y)
{
d[x] = d[x] + d[y];
v[x] = f(v[x], v[y]);
d[y] = (int)x;
}
return x != y;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public bool IsSame(long x, long y) => Root(x) == Root(y);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public long Root(long x) => d[x] < 0 ? x : d[x] = (int)Root(d[x]);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public long Count(long x) => -d[Root(x)];
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public T Calc(long x) => v[Root(x)];
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Set(long x, T val) => v[Root(x)] = val;
}
class LIB_UnionFind : LIB_UnionFind<int>
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public LIB_UnionFind(long n) : base(Enumerable.Repeat(0, (int)n), (x, y) => x + y) { }
[MethodImpl(MethodImplOptions.AggressiveInlining)]
new private void Calc(long x) { }
}
}