結果

問題 No.195 フィボナッチ数列の理解(2)
ユーザー 紙ぺーぱー紙ぺーぱー
提出日時 2015-05-26 03:15:22
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 70 ms / 5,000 ms
コード長 6,805 bytes
コンパイル時間 2,956 ms
コンパイル使用メモリ 114,128 KB
実行使用メモリ 24,072 KB
最終ジャッジ日時 2023-09-20 13:19:59
合計ジャッジ時間 5,647 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 67 ms
24,004 KB
testcase_01 AC 67 ms
22,008 KB
testcase_02 AC 67 ms
22,020 KB
testcase_03 AC 67 ms
21,956 KB
testcase_04 AC 63 ms
21,748 KB
testcase_05 AC 67 ms
23,960 KB
testcase_06 AC 67 ms
21,880 KB
testcase_07 AC 68 ms
22,100 KB
testcase_08 AC 69 ms
22,080 KB
testcase_09 AC 68 ms
21,936 KB
testcase_10 AC 68 ms
21,880 KB
testcase_11 AC 68 ms
22,120 KB
testcase_12 AC 67 ms
23,904 KB
testcase_13 AC 68 ms
21,936 KB
testcase_14 AC 67 ms
21,852 KB
testcase_15 AC 69 ms
23,936 KB
testcase_16 AC 64 ms
21,780 KB
testcase_17 AC 70 ms
24,072 KB
testcase_18 AC 63 ms
23,768 KB
testcase_19 AC 68 ms
22,052 KB
testcase_20 AC 63 ms
21,644 KB
testcase_21 AC 69 ms
21,932 KB
testcase_22 AC 64 ms
23,608 KB
testcase_23 AC 68 ms
21,956 KB
testcase_24 AC 63 ms
21,632 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.Linq;
using System.Collections.Generic;
using Debug = System.Diagnostics.Debug;
using StringBuilder = System.Text.StringBuilder;
using System.Numerics;
namespace Program
{

    public class Solver
    {
        public void Solve()
        {
            BigInteger p = sc.Long();
            BigInteger q = sc.Long();
            BigInteger r = sc.Long();
            var uniq = new BigInteger[] { p, q, r }.Distinct().ToArray(); ;
            if (uniq.Length == 1)
                p = 1;
            if (uniq.Length == 2)
            {
                p = uniq[0]; q = uniq[1]; r = uniq[1];
            }
            var sz = Math.Max(2, uniq.Length);
            var fib1 = new BigInteger[48];
            var fib2 = new BigInteger[48];
            fib1[0] = 1;
            fib2[1] = 1;
            for (int i = 2; i < 48; i++)
            {
                fib1[i] = fib1[i - 1] + fib1[i - 2];
                fib2[i] = fib2[i - 1] + fib2[i - 2];
            }
            var ans = Pair.Create<BigInteger, BigInteger>(long.MaxValue, long.MaxValue);
            Func<BigInteger, BigInteger, bool> check = (x, y) =>
                {
                    for (int k = 0; k < 48; k++)
                    {
                        if (x * fib1[k] + y * fib2[k] == r)
                            return true;
                    }
                    return false;
                };
            for (int i = 0; i < 48; i++)
                for (int j = 0; j < 48; j++)
                {
                    if (i == j) continue;
                    var x = fib1[i] * fib2[j] - fib1[j] * fib2[i];
                    var y = fib2[j] * p - fib2[i] * q;
                    var z = -fib1[j] * p + fib1[i] * q;
                    var a = y / x; var b = z / x;
                    if (y % x != 0 || z % x != 0 || a <= 0 || b <= 0)
                        continue;
                    if (check(a, b))
                        ans = Pair.Min(ans, Pair.Create<BigInteger, BigInteger>(a, b));

                }
            if (ans.x == long.MaxValue)
                IO.Printer.Out.WriteLine(-1);
            else IO.Printer.Out.WriteLine("{0} {1}", ans.x, ans.y);

        }
        public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput());
        static T[] Enumerate<T>(int n, Func<int, T> f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; }
        static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; }
    }
}

#region Ex
namespace Program.IO
{
    using System.IO;
    using System.Text;
    using System.Globalization;
    public class Printer : StreamWriter
    {
        static Printer() { Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false }; }
        public static Printer Out { get; set; }
        public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } }
        public Printer(System.IO.Stream stream) : base(stream, new UTF8Encoding(false, true)) { }
        public Printer(System.IO.Stream stream, Encoding encoding) : base(stream, encoding) { }
        public void Write<T>(string format, IEnumerable<T> source) { base.Write(format, source.OfType<object>().ToArray()); }
        public void WriteLine<T>(string format, IEnumerable<T> source) { base.WriteLine(format, source.OfType<object>().ToArray()); }
    }
    public class StreamScanner
    {
        public StreamScanner(Stream stream) { str = stream; }
        public readonly Stream str;
        private readonly byte[] buf = new byte[1024];
        private int len, ptr;
        public bool isEof = false;
        public bool IsEndOfStream { get { return isEof; } }
        private byte read()
        {
            if (isEof) return 0;
            if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; } }
            return buf[ptr++];
        }
        public char Char() { byte b = 0; do b = read(); while ((b < 33 || 126 < b) && !isEof); return (char)b; }

        public string Scan()
        {
            var sb = new StringBuilder();
            for (var b = Char(); b >= 33 && b <= 126; b = (char)read())
                sb.Append(b);
            return sb.ToString();
        }
        public long Long()
        {
            if (isEof) return long.MinValue;
            long ret = 0; byte b = 0; var ng = false;
            do b = read();
            while (b != '-' && (b < '0' || '9' < b));
            if (b == '-') { ng = true; b = read(); }
            for (; true; b = read())
            {
                if (b < '0' || '9' < b)
                    return ng ? -ret : ret;
                else ret = ret * 10 + b - '0';
            }
        }
        public int Integer() { return (isEof) ? int.MinValue : (int)Long(); }
        public double Double() { return double.Parse(Scan(), CultureInfo.InvariantCulture); }
        private T[] enumerate<T>(int n, Func<T> f)
        {
            var a = new T[n];
            for (int i = 0; i < n; ++i) a[i] = f();
            return a;
        }

        public char[] Char(int n) { return enumerate(n, Char); }
        public string[] Scan(int n) { return enumerate(n, Scan); }
        public double[] Double(int n) { return enumerate(n, Double); }
        public int[] Integer(int n) { return enumerate(n, Integer); }
        public long[] Long(int n) { return enumerate(n, Long); }
    }
}

static class Ex
{
    static public string AsString(this IEnumerable<char> ie) { return new string(System.Linq.Enumerable.ToArray(ie)); }
    static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ") { return string.Join(st, ie); }
    static public void Main()
    {
        var solver = new Program.Solver();
        solver.Solve();
        Program.IO.Printer.Out.Flush();
    }
}
#endregion
#region Compair
static public class Pair
{
    static public Pair<FT, ST> Create<FT, ST>(FT f, ST s)
        where FT : IComparable<FT>
        where ST : IComparable<ST>
    { return new Pair<FT, ST>(f, s); }
    static public Pair<FT, ST> Min<FT, ST>(Pair<FT, ST> p, Pair<FT, ST> q)
        where FT : IComparable<FT>
        where ST : IComparable<ST>
    { return (p.CompareTo(q) <= 0) ? p : q; }
    static public Pair<FT, ST> Max<FT, ST>(Pair<FT, ST> p, Pair<FT, ST> q)
        where FT : IComparable<FT>
        where ST : IComparable<ST>
    { return (p.CompareTo(q) >= 0) ? p : q; }
}
public struct Pair<FT, ST> : IComparable<Pair<FT, ST>>
    where FT : IComparable<FT>
    where ST : IComparable<ST>
{
    public FT x;
    public ST y;
    public Pair(FT f, ST s) : this() { x = f; y = s; }

    public int CompareTo(Pair<FT, ST> other)
    {
        var cmp = x.CompareTo(other.x);
        return cmp != 0 ? cmp : y.CompareTo(other.y);
    }
}
#endregion
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