結果

問題 No.1439 Let's Compare!!!!
ユーザー EmKjpEmKjp
提出日時 2021-04-11 17:38:08
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 179 ms / 2,000 ms
コード長 9,458 bytes
コンパイル時間 1,062 ms
コンパイル使用メモリ 115,096 KB
実行使用メモリ 25,344 KB
最終ジャッジ日時 2024-06-27 12:14:21
合計ジャッジ時間 4,994 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge5
このコードへのチャレンジ
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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 24 ms
17,408 KB
testcase_01 AC 25 ms
17,664 KB
testcase_02 AC 25 ms
17,664 KB
testcase_03 AC 24 ms
17,664 KB
testcase_04 AC 24 ms
17,536 KB
testcase_05 AC 25 ms
17,536 KB
testcase_06 AC 24 ms
17,664 KB
testcase_07 AC 27 ms
17,664 KB
testcase_08 AC 29 ms
18,132 KB
testcase_09 AC 26 ms
17,920 KB
testcase_10 AC 176 ms
25,088 KB
testcase_11 AC 178 ms
24,576 KB
testcase_12 AC 176 ms
24,576 KB
testcase_13 AC 179 ms
25,344 KB
testcase_14 AC 175 ms
25,216 KB
testcase_15 AC 176 ms
23,680 KB
testcase_16 AC 173 ms
23,680 KB
testcase_17 AC 178 ms
23,424 KB
testcase_18 AC 147 ms
23,424 KB
権限があれば一括ダウンロードができます
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

diff # 

using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Text;
using System.Linq;

using E = System.Linq.Enumerable;
using System.Threading;

internal partial class Solver {
    public void Run() {
        var n = ni();
        var s = ns().ToCharArray();
        var t = ns().ToCharArray();
        var q = ni();
        var diffPq = new PriorityQueue<int>();
        var isDiff = new bool[n + 1];
        for (int i = 0; i < n; i++) {
            if (s[i] != t[i]) {
                isDiff[i] = true;
                diffPq.Enqueue(i);
            }
        }
        isDiff[n] = true;
        diffPq.Enqueue(n);
        for (int _ = 0; _ < q; _++) {
            var c = ns()[0];
            var x = ni() - 1;
            var y = ni();

            if (c == 'S') {
                if (s[x] != y + '0') {
                    var before = isDiff[x];
                    s[x] = (char)(y + '0');
                    var after = s[x] != t[x];
                    if (before != after) {
                        if (after) {
                            isDiff[x] = true;
                            diffPq.Enqueue(x);
                        } else {
                            isDiff[x] = false;
                        }
                    }
                }
            } else { // T
                if (t[x] != y + '0') {
                    var before = isDiff[x];
                    t[x] = (char)(y + '0');
                    var after = s[x] != t[x];
                    if (before != after) {
                        if (after) {
                            isDiff[x] = true;
                            diffPq.Enqueue(x);
                        } else {
                            isDiff[x] = false;
                        }
                    }
                }
            }

            while (!isDiff[diffPq.Peek()]) {
                diffPq.Dequeue();
            }
            int d = diffPq.Peek();
            if (d == n) {
                cout.WriteLine("=");
            } else {
                cout.WriteLine(s[d] < t[d] ? "<" : ">");
            }
        }
    }
}


public class PriorityQueue<T> {
    private T[] _array = new T[128];
    private int _size = 0;
    private readonly Comparison<T> _compare;

    public PriorityQueue() {
        _compare = Comparer<T>.Default.Compare;
    }

    public PriorityQueue(Comparison<T> comp) {
        _compare = comp;
    }

    public int Count { get { return _size; } }

    private void Swap(int a, int b) {
        var t = _array[a];
        _array[a] = _array[b];
        _array[b] = t;
    }

    private void Expand() {
        var newlist = new T[_array.Length << 1];
        Array.Copy(_array, newlist, _array.Length);
        _array = newlist;
    }

    public bool Any() {
        return _size > 0;
    }

    public void Enqueue(T newValue) {
        int pos = ++_size;
        if (_size >= _array.Length) {
            Expand();
        }
        _array[pos] = newValue;
        while (pos > 1) {
            int parent = pos >> 1;
            if (_compare(_array[parent], _array[pos]) > 0) {
                Swap(parent, pos);
                pos = parent;
            } else {
                break;
            }
        }
    }

    public T Peek() {
        return _array[1];
    }

    public T Dequeue() {
        var top = _array[1];
        int pos = 1;
        _array[pos] = _array[_size--];
        while ((pos << 1) <= _size) {
            int left = pos << 1;
            int right = left | 1;
            int next = left;
            if (right <= _size && _compare(_array[left], _array[right]) > 0) {
                next = right;
            }
            if (_compare(_array[pos], _array[next]) > 0) {
                Swap(next, pos);
                pos = next;
            } else {
                break;
            }
        }

        return top;
    }
};

// PREWRITEN CODE BEGINS FROM HERE

static public class StringExtensions {
    static public string JoinToString<T>(this IEnumerable<T> source, string separator = " ") {
        return string.Join(separator, source);
    }
}

internal partial class Solver : Scanner {
    static readonly int? StackSizeInMebiByte = null; //50;
    public static void StartAndJoin(Action action, int maxStackSize) {
        var thread = new Thread(new ThreadStart(action), maxStackSize);
        thread.Start();
        thread.Join();
    }

    public static void Main() {
#if LOCAL
        byte[] inputBuffer = new byte[1000000];
        var inputStream = Console.OpenStandardInput(inputBuffer.Length);
        using (var reader = new StreamReader(inputStream, Console.InputEncoding, false, inputBuffer.Length)) {
            Console.SetIn(reader);
            new Solver(Console.In, Console.Out).Run();
        }
#else
        Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false });
        if (StackSizeInMebiByte.HasValue) {
            StartAndJoin(() => new Solver(Console.In, Console.Out).Run(), StackSizeInMebiByte.Value * 1024 * 1024);
        } else {
            new Solver(Console.In, Console.Out).Run();
        }
        Console.Out.Flush();
#endif
    }

#pragma warning disable IDE0052
    private readonly TextReader cin;
    private readonly TextWriter cout;
    private readonly TextWriter cerr;
#pragma warning restore IDE0052

    public Solver(TextReader reader, TextWriter writer)
        : base(reader) {
        cin = reader;
        cout = writer;
        cerr = Console.Error;
    }

    public Solver(string input, TextWriter writer)
        : this(new StringReader(input), writer) {
    }

#pragma warning disable IDE1006
#pragma warning disable IDE0051
    private int ni() { return NextInt(); }
    private int[] ni(int n) { return NextIntArray(n); }
    private long nl() { return NextLong(); }
    private long[] nl(int n) { return NextLongArray(n); }
    private double nd() { return NextDouble(); }
    private double[] nd(int n) { return NextDoubleArray(n); }
    private string ns() { return Next(); }
    private string[] ns(int n) { return NextArray(n); }
#pragma warning restore IDE1006
#pragma warning restore IDE0051
}

#if DEBUG
internal static class LinqPadExtension {
    public static string TextDump<T>(this T obj) {
        if (obj is IEnumerable) return (obj as IEnumerable).Cast<object>().JoinToString().Dump();
        else return obj.ToString().Dump();
    }
    public static T Dump<T>(this T obj) {
        return LINQPad.Extensions.Dump(obj);
    }
}
#endif

public class Scanner {
    private readonly TextReader Reader;
    private readonly CultureInfo ci = CultureInfo.InvariantCulture;

    private readonly char[] buffer = new char[2 * 1024];
    private int cursor = 0, length = 0;
    private string Token;
    private readonly StringBuilder sb = new StringBuilder(1024);

    public Scanner()
        : this(Console.In) {
    }

    public Scanner(TextReader reader) {
        Reader = reader;
    }

    public int NextInt() { return checked((int)NextLong()); }
    public long NextLong() {
        var s = Next();
        long r = 0;
        int i = 0;
        bool negative = false;
        if (s[i] == '-') {
            negative = true;
            i++;
        }
        for (; i < s.Length; i++) {
            r = r * 10 + (s[i] - '0');
#if DEBUG
            if (!char.IsDigit(s[i])) throw new FormatException();
#endif
        }
        return negative ? -r : r;
    }
    public double NextDouble() { return double.Parse(Next(), ci); }
    public string[] NextArray(int size) {
        string[] array = new string[size];
        for (int i = 0; i < size; i++) {
            array[i] = Next();
        }

        return array;
    }
    public int[] NextIntArray(int size) {
        int[] array = new int[size];
        for (int i = 0; i < size; i++) {
            array[i] = NextInt();
        }

        return array;
    }

    public long[] NextLongArray(int size) {
        long[] array = new long[size];
        for (int i = 0; i < size; i++) {
            array[i] = NextLong();
        }

        return array;
    }

    public double[] NextDoubleArray(int size) {
        double[] array = new double[size];
        for (int i = 0; i < size; i++) {
            array[i] = NextDouble();
        }

        return array;
    }

    public string Next() {
        if (Token == null) {
            if (!StockToken()) {
                throw new Exception();
            }
        }
        var token = Token;
        Token = null;
        return token;
    }

    public bool HasNext() {
        if (Token != null) {
            return true;
        }

        return StockToken();
    }

    private bool StockToken() {
        while (true) {
            sb.Clear();
            while (true) {
                if (cursor >= length) {
                    cursor = 0;
                    if ((length = Reader.Read(buffer, 0, buffer.Length)) <= 0) {
                        break;
                    }
                }
                var c = buffer[cursor++];
                if (33 <= c && c <= 126) {
                    sb.Append(c);
                } else {
                    if (sb.Length > 0) break;
                }
            }

            if (sb.Length > 0) {
                Token = sb.ToString();
                return true;
            }

            return false;
        }
    }
}
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