using System; using System.Collections.Generic; using System.Linq; class Program { static string InputPattern = "Input4"; static List GetInputList() { var WillReturn = new List(); if (InputPattern == "Input1") { WillReturn.Add("5"); WillReturn.Add("2 1 2 3 2"); //2 //最も回答の多い2のレベルとなる } else if (InputPattern == "Input2") { WillReturn.Add("5"); WillReturn.Add("1 2 3 3 1"); //3 //1と3が同数なのでより高いレベルの3となる } else if (InputPattern == "Input3") { WillReturn.Add("10"); WillReturn.Add("5 3 5 6 3 6 2 3 5 6"); //6 } else { string wkStr; while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr); } return WillReturn; } static void Main() { List InputList = GetInputList(); int[] LArr = InputList[1].Split(' ').Select(X => int.Parse(X)).ToArray(); var tmp1 = LArr.GroupBy(X => X).Select(X => new { X.Key, cnt = X.Count() }); var tmp2 = tmp1.OrderByDescending(X => X.cnt).ThenByDescending(X => X.Key); Console.WriteLine(tmp2.First().Key); } }