#409751 (C#(csc)) No.955 ax^2+bx+c=0

提出ソース

結果

問題	No.955 ax^2+bx+c=0
ユーザー	りあん
提出日時	2019-12-18 01:08:05
言語	C#(csc) (csc 3.9.0)
結果	AC
実行時間	30 ms / 2,000 ms
コード長	6,755 bytes
コンパイル時間	3,868 ms
コンパイル使用メモリ	114,176 KB
実行使用メモリ	20,860 KB
最終ジャッジ日時	2024-09-18 22:01:42
合計ジャッジ時間	10,460 ms
ジャッジサーバーID （参考情報）	judge2 / 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	30 ms 18,688 KB
testcase_01	AC	28 ms 18,816 KB
testcase_02	AC	26 ms 18,048 KB
testcase_03	AC	27 ms 17,920 KB
testcase_04	AC	26 ms 17,920 KB
testcase_05	AC	28 ms 18,048 KB
testcase_06	AC	27 ms 17,920 KB
testcase_07	AC	28 ms 18,176 KB
testcase_08	AC	27 ms 18,048 KB
testcase_09	AC	27 ms 17,920 KB
testcase_10	AC	27 ms 17,920 KB
testcase_11	AC	27 ms 18,048 KB
testcase_12	AC	27 ms 17,920 KB
testcase_13	AC	27 ms 18,048 KB
testcase_14	AC	27 ms 18,176 KB
testcase_15	AC	30 ms 18,944 KB
testcase_16	AC	29 ms 18,048 KB
testcase_17	AC	30 ms 18,816 KB
testcase_18	AC	29 ms 18,176 KB
testcase_19	AC	30 ms 18,688 KB
testcase_20	AC	27 ms 18,048 KB
testcase_21	AC	30 ms 18,560 KB
testcase_22	AC	28 ms 18,048 KB
testcase_23	AC	28 ms 18,816 KB
testcase_24	AC	29 ms 18,816 KB
testcase_25	AC	29 ms 18,688 KB
testcase_26	AC	29 ms 18,944 KB
testcase_27	AC	28 ms 18,944 KB
testcase_28	AC	29 ms 18,944 KB
testcase_29	AC	29 ms 18,688 KB
testcase_30	AC	29 ms 18,944 KB
testcase_31	AC	29 ms 18,688 KB
testcase_32	AC	29 ms 18,816 KB
testcase_33	AC	28 ms 18,816 KB
testcase_34	AC	29 ms 18,944 KB
testcase_35	AC	29 ms 18,816 KB
testcase_36	AC	29 ms 18,944 KB
testcase_37	AC	29 ms 18,688 KB
testcase_38	AC	29 ms 18,816 KB
testcase_39	AC	29 ms 18,944 KB
testcase_40	AC	29 ms 18,816 KB
testcase_41	AC	30 ms 18,816 KB
testcase_42	AC	30 ms 18,816 KB
testcase_43	AC	29 ms 18,816 KB
testcase_44	AC	30 ms 18,944 KB
testcase_45	AC	30 ms 20,860 KB
testcase_46	AC	30 ms 18,944 KB
testcase_47	AC	30 ms 18,688 KB
testcase_48	AC	29 ms 18,816 KB
testcase_49	AC	29 ms 18,816 KB
testcase_50	AC	29 ms 18,688 KB
testcase_51	AC	29 ms 18,688 KB
testcase_52	AC	29 ms 18,944 KB
testcase_53	AC	29 ms 18,944 KB
testcase_54	AC	28 ms 18,688 KB
testcase_55	AC	28 ms 18,816 KB
testcase_56	AC	28 ms 18,816 KB
testcase_57	AC	30 ms 18,816 KB
testcase_58	AC	30 ms 18,816 KB
testcase_59	AC	29 ms 18,688 KB
testcase_60	AC	27 ms 18,048 KB
testcase_61	AC	27 ms 18,048 KB
testcase_62	AC	30 ms 18,560 KB
testcase_63	AC	29 ms 18,816 KB
testcase_64	AC	27 ms 17,920 KB
testcase_65	AC	29 ms 18,688 KB
testcase_66	AC	27 ms 18,176 KB
testcase_67	AC	29 ms 18,816 KB
testcase_68	AC	27 ms 17,792 KB
testcase_69	AC	29 ms 18,688 KB
testcase_70	AC	29 ms 18,816 KB
testcase_71	AC	27 ms 17,920 KB
testcase_72	AC	27 ms 17,920 KB
testcase_73	AC	29 ms 18,688 KB
testcase_74	AC	29 ms 18,688 KB
testcase_75	AC	27 ms 18,048 KB
testcase_76	AC	26 ms 18,048 KB
testcase_77	AC	29 ms 18,944 KB
testcase_78	AC	28 ms 18,816 KB
testcase_79	AC	29 ms 18,944 KB
testcase_80	AC	26 ms 17,920 KB
testcase_81	AC	30 ms 18,560 KB
testcase_82	AC	29 ms 18,944 KB
testcase_83	AC	30 ms 18,816 KB
testcase_84	AC	29 ms 18,944 KB
testcase_85	AC	28 ms 18,944 KB
testcase_86	AC	29 ms 18,816 KB
testcase_87	AC	29 ms 18,816 KB
testcase_88	AC	29 ms 18,688 KB
testcase_89	AC	28 ms 18,944 KB
testcase_90	AC	28 ms 18,816 KB
testcase_91	AC	29 ms 18,816 KB
testcase_92	AC	27 ms 18,304 KB
testcase_93	AC	28 ms 18,048 KB
testcase_94	AC	29 ms 18,816 KB
testcase_95	AC	30 ms 18,816 KB
testcase_96	AC	29 ms 18,688 KB
testcase_97	AC	29 ms 18,688 KB
testcase_98	AC	29 ms 18,944 KB
testcase_99	AC	29 ms 18,688 KB
testcase_100	AC	27 ms 18,304 KB
testcase_101	AC	29 ms 18,816 KB
testcase_102	AC	29 ms 18,816 KB
testcase_103	AC	29 ms 18,688 KB
testcase_104	AC	30 ms 18,688 KB
testcase_105	AC	30 ms 18,816 KB
testcase_106	AC	29 ms 18,944 KB
testcase_107	AC	30 ms 18,944 KB
testcase_108	AC	29 ms 18,816 KB
testcase_109	AC	29 ms 18,560 KB
testcase_110	AC	29 ms 18,816 KB
testcase_111	AC	28 ms 18,688 KB
testcase_112	AC	29 ms 18,688 KB
testcase_113	AC	29 ms 18,944 KB
testcase_114	AC	29 ms 18,816 KB
testcase_115	AC	29 ms 18,688 KB
testcase_116	AC	29 ms 18,816 KB
testcase_117	AC	30 ms 18,688 KB
testcase_118	AC	28 ms 18,944 KB
testcase_119	AC	30 ms 18,688 KB
testcase_120	AC	29 ms 18,816 KB
testcase_121	AC	30 ms 18,816 KB
testcase_122	AC	30 ms 18,944 KB
testcase_123	AC	28 ms 18,688 KB
testcase_124	AC	29 ms 18,944 KB

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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

raw source code

using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Threading;
using System.Text;
using System.Diagnostics;
using static util;
using P = pair<int, int>;

class Program {
    static void Main(string[] args) {
        var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
        var solver = new Solver(sw);
        // var t = new Thread(solver.solve, 1 << 26); // 64 MB
        // t.Start();
        // t.Join();
        solver.solve();
        sw.Flush();
    }
}

class Solver {
    StreamWriter sw;
    Scan sc;
    void Prt(string a) => sw.WriteLine(a);
    void Prt<T>(IEnumerable<T> a) => Prt(string.Join(" ", a));
    void Prt(params object[] a) => Prt(string.Join(" ", a));
    public Solver(StreamWriter sw) {
        this.sw = sw;
        this.sc = new Scan();
    }

    public void solve() {
        long a, b, c;
        sc.Multi(out a, out b, out c);
        if (a != 0) {
            if (a < 0) {
                a = -a;
                b = -b;
                c = -c;
            }
            long p = b * b - a * c * 4;
            if (p == 0) {
                Prt(1);
                Prt(-0.5 * b / a);
            }
            else if (p > 0) {
                double s, t;
                if (b >= 0) {
                    s = -0.5 * (Math.Sqrt(p) + b) / a;
                    t = c / (double)a / s;
                }
                else {
                    t = 0.5 * (Math.Sqrt(p) - b) / a;
                    s = c / (double)a / t;
                }
                Prt(2);
                Prt(s);
                Prt(t);
            }
            else {
                Prt(0);
            }
        }
        else {
            if (b != 0) {
                Prt(1);
                Prt(-c / (double)b);
            }
            else {
                Prt(c == 0 ? -1 : 0);
            }
        }
    }
}

class pair<T, U> : IComparable<pair<T, U>> {
    public T v1;
    public U v2;
    public pair() : this(default(T), default(U)) {}
    public pair(T v1, U v2) { this.v1 = v1; this.v2 = v2; }
    public int CompareTo(pair<T, U> a) {
        int c = Comparer<T>.Default.Compare(v1, a.v1);
        return c != 0 ? c : Comparer<U>.Default.Compare(v2, a.v2);
    }
    public override string ToString() => v1 + " " + v2;
    public void Deconstruct(out T a, out U b) { a = v1; b = v2; }
}
static class util {
    public static readonly int M = 1000000007;
    // public static readonly int M = 998244353;
    public static readonly long LM = 1L << 60;
    public static readonly double eps = 1e-11;
    public static void DBG(string a) => Console.Error.WriteLine(a);
    public static void DBG<T>(IEnumerable<T> a) => DBG(string.Join(" ", a));
    public static void DBG(params object[] a) => DBG(string.Join(" ", a));
    public static void Assert(bool cond) { if (!cond) throw new Exception(); }
    public static pair<T, U> make_pair<T, U>(T v1, U v2) => new pair<T, U>(v1, v2);
    public static int CompareList<T>(IList<T> a, IList<T> b) where T : IComparable<T> {
        for (int i = 0; i < a.Count && i < b.Count; i++)
            if (a[i].CompareTo(b[i]) != 0) return a[i].CompareTo(b[i]);
        return a.Count.CompareTo(b.Count);
    }
    public static bool inside(int i, int j, int h, int w) => i >= 0 && i < h && j >= 0 && j < w;
    static readonly int[] dd = { 0, 1, 0, -1 };
    // static readonly string dstring = "RDLU";
    public static P[] adjacents(int i, int j)
        => Enumerable.Range(0, dd.Length).Select(k => new P(i + dd[k], j + dd[k ^ 1])).ToArray();
    public static P[] adjacents(int i, int j, int h, int w)
        => Enumerable.Range(0, dd.Length).Select(k => new P(i + dd[k], j + dd[k ^ 1]))
                                         .Where(p => inside(p.v1, p.v2, h, w)).ToArray();
    public static P[] adjacents(this P p) => adjacents(p.v1, p.v2);
    public static P[] adjacents(this P p, int h, int w) => adjacents(p.v1, p.v2, h, w);
    public static Dictionary<T, int> compress<T>(this IEnumerable<T> a)
        => a.Distinct().OrderBy(v => v).Select((v, i) => new { v, i }).ToDictionary(p => p.v, p => p.i);
    public static Dictionary<T, int> compress<T>(params IEnumerable<T>[] a) => compress(a.Aggregate(Enumerable.Union));
    public static T[] inv<T>(this Dictionary<T, int> dic) {
        var res = new T[dic.Count];
        foreach (var item in dic) res[item.Value] = item.Key;
        return res;
    }
    public static void swap<T>(ref T a, ref T b) where T : struct { var t = a; a = b; b = t; }
    public static void swap<T>(this IList<T> a, int i, int j) where T : struct { var t = a[i]; a[i] = a[j]; a[j] = t; }
    public static T[] copy<T>(this IList<T> a) {
        var ret = new T[a.Count];
        for (int i = 0; i < a.Count; i++) ret[i] = a[i];
        return ret;
    }
}

class Scan {
    StreamReader sr;
    public Scan() { sr = new StreamReader(Console.OpenStandardInput()); }
    public Scan(string path) { sr = new StreamReader(path); }
    public int Int => int.Parse(Str);
    public long Long => long.Parse(Str);
    public double Double => double.Parse(Str);
    public string Str => sr.ReadLine().Trim();
    public pair<T, U> Pair<T, U>() {
        T a; U b;
        Multi(out a, out b);
        return new pair<T, U>(a, b);
    }
    public P P => Pair<int, int>();
    public int[] IntArr => StrArr.Select(int.Parse).ToArray();
    public long[] LongArr => StrArr.Select(long.Parse).ToArray();
    public double[] DoubleArr => StrArr.Select(double.Parse).ToArray();
    public string[] StrArr => Str.Split(new[]{' '}, StringSplitOptions.RemoveEmptyEntries);
    bool eq<T, U>() => typeof(T).Equals(typeof(U));
    T ct<T, U>(U a) => (T)Convert.ChangeType(a, typeof(T));
    T cv<T>(string s) => eq<T, int>()    ? ct<T, int>(int.Parse(s))
                       : eq<T, long>()   ? ct<T, long>(long.Parse(s))
                       : eq<T, double>() ? ct<T, double>(double.Parse(s))
                       : eq<T, char>()   ? ct<T, char>(s[0])
                                         : ct<T, string>(s);
    public void Multi<T>(out T a) => a = cv<T>(Str);
    public void Multi<T, U>(out T a, out U b)
    { var ar = StrArr; a = cv<T>(ar[0]); b = cv<U>(ar[1]); }
    public void Multi<T, U, V>(out T a, out U b, out V c)
    { var ar = StrArr; a = cv<T>(ar[0]); b = cv<U>(ar[1]); c = cv<V>(ar[2]); }
    public void Multi<T, U, V, W>(out T a, out U b, out V c, out W d)
    { var ar = StrArr; a = cv<T>(ar[0]); b = cv<U>(ar[1]); c = cv<V>(ar[2]); d = cv<W>(ar[3]); }
    public void Multi<T, U, V, W, X>(out T a, out U b, out V c, out W d, out X e)
    { var ar = StrArr; a = cv<T>(ar[0]); b = cv<U>(ar[1]); c = cv<V>(ar[2]); d = cv<W>(ar[3]); e = cv<X>(ar[4]); }
}

yukicoder

結果

テストケース

コンパイルメッセージ

ソースコード