結果
| 問題 |
No.74 貯金箱の退屈
|
| コンテスト | |
| ユーザー |
eitaho
|
| 提出日時 | 2015-04-17 23:35:42 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 35 ms / 5,000 ms |
| コード長 | 4,027 bytes |
| コンパイル時間 | 2,530 ms |
| コンパイル使用メモリ | 110,208 KB |
| 実行使用メモリ | 19,328 KB |
| 最終ジャッジ日時 | 2024-07-04 15:55:01 |
| 合計ジャッジ時間 | 4,584 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 30 |
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.IO;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using Enu = System.Linq.Enumerable;
using System.Collections;
class Program
{
public void Solve()
{
int N = Reader.Int();
var A = Reader.IntArray(N);
var W = Reader.IntArray(N);
bool[] selfLoop = new bool[N];
var uf = new UnionFind(N);
for (int i = 0; i < N; i++)
{
int L = ((i - A[i]) % N + N) % N;
int R = (i + A[i]) % N;
if (L == R) selfLoop[L] = true;
uf.Unite(L, R);
}
foreach (var c in Enu.Range(0, N).Select(i => uf.Root(i)).Distinct())
{
var vs = Enu.Range(0, N).Where(i => uf.Root(i) == c);
int need = vs.Count(v => W[v] == 0);
if (need % 2 == 1 && !vs.Any(v => selfLoop[v]))
{
Console.WriteLine("No");
return;
}
}
Console.WriteLine("Yes");
}
class UnionFind
{
private int[] parent;
private int[] rank;
private int[] numElements;
public UnionFind(int N)
{
parent = new int[N];
rank = new int[N];
numElements = new int[N];
for (int i = 0; i < N; i++)
{
parent[i] = i;
numElements[i] = 1;
}
}
public int Root(int x)
{
if (parent[x] == x) return x;
return parent[x] = Root(parent[x]);
}
public bool Same(int x, int y)
{
return Root(x) == Root(y);
}
public int NumElements(int x)
{
return numElements[Root(x)];
}
public bool Unite(int x, int y)
{
x = Root(x); y = Root(y);
if (x == y) return false;
if (rank[x] < rank[y])
{
parent[x] = y;
numElements[y] += numElements[x];
}
else
{
parent[y] = x;
if (rank[x] == rank[y]) { rank[x]++; }
numElements[x] += numElements[y];
}
return true;
}
}
}
class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
private static TextReader reader = Console.In;
private static readonly char[] separator = { ' ' };
private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
private static string[] A = new string[0];
private static int i;
private static void Init() { A = new string[0]; }
public static void Set(TextReader r) { reader = r; Init(); }
public static void Set(string file) { reader = new StreamReader(file); Init(); }
public static bool HasNext() { return CheckNext(); }
public static string String() { return Next(); }
public static int Int() { return int.Parse(Next()); }
public static long Long() { return long.Parse(Next()); }
public static double Double() { return double.Parse(Next()); }
public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }
public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }
public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); }
public static string Line() { return reader.ReadLine().Trim(); }
private static string[] Split(string s) { return s.Split(separator, op); }
private static string Next() { CheckNext(); return A[i++]; }
private static bool CheckNext()
{
if (i < A.Length) return true;
string line = reader.ReadLine();
if (line == null) return false;
if (line == "") return CheckNext();
A = Split(line);
i = 0;
return true;
}
}
eitaho