結果

問題 No.816 Beautiful tuples
ユーザー claw88
提出日時 2019-04-19 21:27:00
言語 C#
(csc 3.100.19.26603)
結果
AC  
実行時間 38 ms
コード長 3,871 Byte
コンパイル時間 3,441 ms
使用メモリ 10,724 KB
最終ジャッジ日時 2019-09-25 21:38:23

テストケース

テストケース表示
入力 結果 実行時間
使用メモリ
01.txt AC 35 ms
10,708 KB
02.txt AC 34 ms
10,720 KB
03.txt AC 35 ms
10,716 KB
04.txt AC 36 ms
10,704 KB
05.txt AC 35 ms
10,708 KB
06.txt AC 36 ms
10,704 KB
07.txt AC 36 ms
10,716 KB
08.txt AC 35 ms
10,716 KB
09.txt AC 35 ms
10,716 KB
10.txt AC 37 ms
10,712 KB
11.txt AC 36 ms
10,716 KB
12.txt AC 36 ms
10,704 KB
13.txt AC 38 ms
10,724 KB
14.txt AC 36 ms
10,712 KB
15.txt AC 36 ms
10,716 KB
テストケース一括ダウンロード
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.100.19.26603 (9d80dea7)
Copyright (C) Microsoft Corporation. All rights reserved.

ソースコード

diff #
using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using SB = System.Text.StringBuilder;
//using System.Threading.Tasks;
//using System.Text.RegularExpressions;
//using System.Globalization;
//using System.Diagnostics;
using static System.Console;
using System.Numerics;
using static System.Math;
using pair = Pair<int, int>;

class Program
{
    static void Main()
    {
        //SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false });
        new Program().solve();
        Out.Flush();
    }
    readonly Scanner cin = new Scanner();
    readonly int[] dd = { 0, 1, 0, -1, 0 }; //→↓←↑
    readonly int mod = 1000000007;
    readonly int dom = 998244353;
    bool chmax<T>(ref T a, T b) where T : IComparable<T> { if (a.CompareTo(b) < 0) { a = b; return true; } return false; }
    bool chmin<T>(ref T a, T b) where T : IComparable<T> { if (b.CompareTo(a) < 0) { a = b; return true; } return false; }

    bool check(long A, long B, long C)
    {
        return (A + B) % C == 0 && (A + C) % B == 0 && (C + B) % A == 0 && A != B && B != C && C != A; 
    }
    void solve()
    {
        var A = cin.nextlong;
        var B = cin.nextlong;
        var K = A + B;
        var L = new SortedSet<long>();
        for (long i = 1; i * i <= K; i++)
        {
            if (K % i == 0)
            {
                L.Add(i);
                L.Add(K / i);
            
            }
        }
        foreach (var i in L)
        {
            if (check(A, B, i))
            {
                WriteLine(i);
                return;
            }
        }
        WriteLine(-1);
    }

}


static class Ex
{
    public static void join<T>(this IEnumerable<T> values, string sep = " ") => WriteLine(string.Join(sep, values));
    public static string concat<T>(this IEnumerable<T> values) => string.Concat(values);
    public static string reverse(this string s) { var t = s.ToCharArray(); Array.Reverse(t); return t.concat(); }

    public static int lower_bound<T>(this IList<T> arr, T val) where T : IComparable<T>
    {
        int low = 0, high = arr.Count;
        int mid;
        while (low < high)
        {
            mid = ((high - low) >> 1) + low;
            if (arr[mid].CompareTo(val) < 0) low = mid + 1;
            else high = mid;
        }
        return low;
    }
    public static int upper_bound<T>(this IList<T> arr, T val) where T : IComparable<T>
    {
        int low = 0, high = arr.Count;
        int mid;
        while (low < high)
        {
            mid = ((high - low) >> 1) + low;
            if (arr[mid].CompareTo(val) <= 0) low = mid + 1;
            else high = mid;
        }
        return low;
    }
}

class Pair<T, U> : IComparable<Pair<T, U>> where T : IComparable<T> where U : IComparable<U>
{
    public T f; public U s;
    public Pair(T f, U s) { this.f = f; this.s = s; }
    public int CompareTo(Pair<T, U> a) => f.CompareTo(a.f) != 0 ? f.CompareTo(a.f) : s.CompareTo(a.s);
    public override string ToString() => $"{f} {s}";
}

class Scanner
{
    string[] s; int i;
    readonly char[] cs = new char[] { ' ' };
    public Scanner() { s = new string[0]; i = 0; }
    public string[] scan => ReadLine().Split();
    public int[] scanint => Array.ConvertAll(scan, int.Parse);
    public long[] scanlong => Array.ConvertAll(scan, long.Parse);
    public double[] scandouble => Array.ConvertAll(scan, double.Parse);
    public string next
    {
        get
        {
            if (i < s.Length) return s[i++];
            string st = ReadLine();
            while (st == "") st = ReadLine();
            s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
            i = 0;
            return next;
        }
    }
    public int nextint => int.Parse(next);
    public long nextlong => long.Parse(next);
    public double nextdouble => double.Parse(next);
}
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