#564854 (C#(csc)) No.1251 絶対に間違ってはいけない最小化問題

• 問題: No.1251 絶対に間違ってはいけない最小化問題
• ユーザー: azukun
• 提出日時: 2020-10-09 22:31:56
• 言語: C#(csc) (csc 3.9.0)
• 結果: AC
• 実行時間: 216 ms / 2,000 ms
• コード長: 4,435 bytes
• コンパイル時間: 2,413 ms
• コンパイル使用メモリ: 117,440 KB
• 実行使用メモリ: 43,136 KB
• 最終ジャッジ日時: 2024-07-20 12:53:49
• 合計ジャッジ時間: 16,882 ms
• ジャッジサーバーID （参考情報）: judge1 / judge3

ファイルパターン	結果
sample	AC * 3
other	AC * 42

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

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using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
// (づ°ω°)づﾐe★゜・。。・゜゜・。。・゜☆゜・。。・゜゜・。。・゜
public class Solver
{
    public void Solve()
    {
        int n = ReadInt();
        var a = ReadIntArray();
        var b = ReadIntArray();
        Array.Sort(a, b);
        long rsum = 0, rb = 0;
        for (int i = 1; i < n; i++)
        {
            rsum += 1L * b[i] * (a[i] - a[0]);
            rb += b[i];
        }
        int best = 0;
        long ans = rsum;
        long lsum = 0, lb = 0;
        for (int i = 1; i < n; i++)
        {
            rsum -= rb * (a[i] - a[i - 1]);
            rb -= b[i];
            lb += b[i - 1];
            lsum += lb * (a[i] - a[i - 1]);
            if (lsum + rsum < ans)
            {
                ans = lsum + rsum;
                best = i;
            }
        }
        Write(a[best], ans);
    }
    #region Main
    protected static TextReader reader;
    protected static TextWriter writer;
    static void Main()
    {
#if DEBUG
        reader = new StreamReader("..\\..\\input.txt");
        //reader = new StreamReader(Console.OpenStandardInput());
        writer = Console.Out;
        //writer = new StreamWriter("..\\..\\output.txt");
#else
        reader = new StreamReader(Console.OpenStandardInput());
        writer = new StreamWriter(Console.OpenStandardOutput());
        //reader = new StreamReader("input.txt");
        //writer = new StreamWriter("output.txt");
#endif
        try
        {
            new Solver().Solve();
            //var thread = new Thread(new Solver().Solve, 1024 * 1024 * 128);
            //thread.Start();
            //thread.Join();
        }
        catch (Exception ex)
        {
#if DEBUG
            Console.WriteLine(ex);
#else
            throw;
#endif
        }
        reader.Close();
        writer.Close();
    }
    #endregion
    #region Read / Write
    private static Queue<string> currentLineTokens = new Queue<string>();
    private static string[] ReadAndSplitLine() { return reader.ReadLine().Split(new[] { ' ', '\t', }, StringSplitOptions.RemoveEmptyEntries); }
    public static string ReadToken() { while (currentLineTokens.Count == 0) currentLineTokens = new Queue<string>(ReadAndSplitLine()); return 
        currentLineTokens.Dequeue(); }
    public static int ReadInt() { return int.Parse(ReadToken()); }
    public static long ReadLong() { return long.Parse(ReadToken()); }
    public static double ReadDouble() { return double.Parse(ReadToken(), CultureInfo.InvariantCulture); }
    public static int[] ReadIntArray() { return ReadAndSplitLine().Select(int.Parse).ToArray(); }
    public static long[] ReadLongArray() { return ReadAndSplitLine().Select(long.Parse).ToArray(); }
    public static double[] ReadDoubleArray() { return ReadAndSplitLine().Select(s => double.Parse(s, CultureInfo.InvariantCulture)).ToArray(); }
    public static int[][] ReadIntMatrix(int numberOfRows) { int[][] matrix = new int[numberOfRows][]; for (int i = 0; i < numberOfRows; i++) 
        matrix[i] = ReadIntArray(); return matrix; }
    public static int[][] ReadAndTransposeIntMatrix(int numberOfRows)
    {
        int[][] matrix = ReadIntMatrix(numberOfRows); int[][] ret = new int[matrix[0].Length][];
        for (int i = 0; i < ret.Length; i++) { ret[i] = new int[numberOfRows]; for (int j = 0; j < numberOfRows; j++) ret[i][j] = matrix[j][i]; }
        return ret;
    }
    public static string[] ReadLines(int quantity) { string[] lines = new string[quantity]; for (int i = 0; i < quantity; i++) lines[i] = reader
        .ReadLine().Trim(); return lines; }
    public static void WriteArray<T>(IEnumerable<T> array) { writer.WriteLine(string.Join(" ", array)); }
    public static void Write(params object[] array) { WriteArray(array); }
    public static void WriteLines<T>(IEnumerable<T> array) { foreach (var a in array) writer.WriteLine(a); }
    private class SDictionary<TKey, TValue> : Dictionary<TKey, TValue>
    {
        public new TValue this[TKey key]
        {
            get { return ContainsKey(key) ? base[key] : default(TValue); }
            set { base[key] = value; }
        }
    }
    private static T[] Init<T>(int size) where T : new() { var ret = new T[size]; for (int i = 0; i < size; i++) ret[i] = new T(); return ret; }
    #endregion
}
 
 
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