結果

問題 No.265 数学のテスト
ユーザー くれちーくれちー
提出日時 2017-07-26 14:00:50
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 72 ms / 2,000 ms
コード長 3,884 bytes
コンパイル時間 2,237 ms
コンパイル使用メモリ 112,328 KB
実行使用メモリ 29,980 KB
最終ジャッジ日時 2023-08-16 02:11:24
合計ジャッジ時間 5,853 ms
ジャッジサーバーID
(参考情報)
judge15 / judge14
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 59 ms
23,188 KB
testcase_01 AC 68 ms
27,096 KB
testcase_02 AC 71 ms
27,844 KB
testcase_03 AC 70 ms
25,932 KB
testcase_04 AC 68 ms
25,868 KB
testcase_05 AC 70 ms
27,860 KB
testcase_06 AC 66 ms
25,784 KB
testcase_07 AC 68 ms
25,812 KB
testcase_08 AC 72 ms
29,980 KB
testcase_09 AC 68 ms
27,968 KB
testcase_10 AC 67 ms
27,836 KB
testcase_11 AC 69 ms
27,868 KB
testcase_12 AC 58 ms
21,636 KB
testcase_13 AC 63 ms
21,688 KB
testcase_14 AC 62 ms
21,740 KB
testcase_15 AC 55 ms
20,808 KB
testcase_16 AC 60 ms
21,812 KB
testcase_17 AC 60 ms
21,756 KB
testcase_18 AC 57 ms
22,728 KB
testcase_19 AC 58 ms
21,772 KB
testcase_20 AC 60 ms
21,840 KB
testcase_21 AC 56 ms
22,852 KB
testcase_22 AC 64 ms
21,680 KB
testcase_23 AC 62 ms
23,660 KB
testcase_24 AC 57 ms
20,740 KB
testcase_25 AC 62 ms
21,844 KB
testcase_26 AC 59 ms
21,704 KB
testcase_27 AC 59 ms
21,776 KB
testcase_28 AC 62 ms
21,728 KB
testcase_29 AC 60 ms
23,756 KB
testcase_30 AC 62 ms
19,628 KB
testcase_31 AC 59 ms
23,712 KB
testcase_32 AC 58 ms
19,680 KB
testcase_33 AC 60 ms
23,700 KB
testcase_34 AC 55 ms
20,916 KB
testcase_35 AC 58 ms
23,708 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.IO;
using System.Linq;
using System.Numerics;
using System.Text;
using static System.Console;
using static System.Convert;
using static System.Math;
using static Extentions;

class IO
{
    int idx;
    string[] input;

    public IO(TextReader reader)
    {
        input = reader.ReadToEnd().Split(new[] { " ", "\n", "\r" },
            StringSplitOptions.RemoveEmptyEntries);
    }

    T Get<T>(Func<string, T> parser) => parser(input[idx++]);

    public string S => Get(s => s);
    public char C => Get(char.Parse);
    public int I => Get(int.Parse);
    public long L => Get(long.Parse);
    public double F => Get(double.Parse);
    public decimal D => Get(decimal.Parse);
    public BigInteger B => Get(BigInteger.Parse);

    T[] Gets<T>(int n, Func<string, T> parser)
        => input.Skip((idx += n) - n).Take(n).Select(parser).ToArray();

    public string[] Ss(int n) => Gets(n, s => s);
    public char[] Cs(int n) => Gets(n, char.Parse);
    public int[] Is(int n) => Gets(n, int.Parse);
    public long[] Ls(int n) => Gets(n, long.Parse);
    public double[] Fs(int n) => Gets(n, double.Parse);
    public decimal[] Ds(int n) => Gets(n, decimal.Parse);
    public BigInteger[] Bs(int n) => Gets(n, BigInteger.Parse);

    public void Write<T>(params T[] xs) => WriteLine(string.Join(" ", xs));
    public void Write(params object[] xs) => WriteLine(string.Join(" ", xs));
}

static class Extentions
{
}

class Interpreter
{
    readonly int d;
    public Interpreter(int d) { this.d = d + 1; }

    public long[] Interpret(string str)
    {
        var idx = 0;
        return Expr1(str + " ", ref idx);
    }

    // <expr1> ::= <expr2> [ "+" <expr2> ]*
    // <expr2> ::= <expr3> [ "*" <expr3> ]*
    // <expr3> ::= <expr4> | "d{" <expr1> "}"
    // <expr4> ::= <digit> | "x"

    long[] Expr1(string str, ref int idx)
    {
        var deg = Expr2(str, ref idx);
        while (str[idx] == '+')
        {
            idx++;
            deg = Add(deg, Expr2(str, ref idx));
        }
        return deg;
    }

    long[] Expr2(string str, ref int idx)
    {
        var deg = Expr3(str, ref idx);
        while (str[idx] == '*')
        {
            idx++;
            deg = Mul(deg, Expr3(str, ref idx));
        }
        return deg;
    }

    long[] Expr3(string str, ref int idx)
    {
        if (str[idx] == 'd')
        {
            idx += 2;
            var deg = Expr1(str, ref idx);
            idx += 1;
            return D(deg);
        }
        else return Expr4(str, ref idx);
    }

    long[] Expr4(string str, ref int idx)
    {
        var deg = new long[d];
        if (str[idx] == 'x')
        {
            deg[1] = 1;
            idx++;
            return deg;
        }
        var val = 0;
        while (char.IsDigit(str[idx]))
        {
            val = val * 10 + (str[idx] - '0');
            idx++;
        }
        deg[0] = val;
        return deg;
    }

    long[] Mul(long[] x, long[] y)
    {
        var deg = new long[d];
        for (var i = 0; i < d; i++)
            for (var j = i; j < d; j++) deg[j] += x[i] * y[j - i];
        return deg;
    }

    long[] Add(long[] x, long[] y) => x.Zip(y, (a, b) => a + b).ToArray();

    long[] D(long[] x)
    {
        var deg = new long[d];
        for (var i = 1; i < d; i++) deg[i - 1] = x[i] * i;
        return deg;
    }
}

static class Program
{
    public static void Main()
    {
        var sw = new StreamWriter(OpenStandardOutput()) { NewLine = "\n" };
#if DEBUG
        sw.AutoFlush = true;
#else
        sw.AutoFlush = false;
#endif
        SetOut(sw);
        Solve(new IO(In));
        Out.Flush();
    }
    
    static void Solve(IO io)
    {
        var n = io.I;
        var d = io.I;
        var s = io.S;

        io.Write(new Interpreter(d).Interpret(s));
    }
}
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