Submission #26424320

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Source Code Expand

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("3 2");
            WillReturn.Add("0 0 1");
            //1
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("3 2");
            WillReturn.Add("1 1 1");
            //0
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("3 2");
            WillReturn.Add("0 1 0");
            //2
        }
        else if (InputPattern == "Input4") {
            WillReturn.Add("7 3");
            WillReturn.Add("0 0 1 2 0 1 0");
            //2
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();
        int[] wkArr = InputList[0].Split(' ').Select(pX => int.Parse(pX)).ToArray();
        int M = wkArr[1];

        int[] AArr = InputList[1].Split(' ').Select(pX => int.Parse(pX)).ToArray();
        int UB = AArr.GetUpperBound(0);

        // Mexの候補
        var MexKouhoSet = new SortedSet<int>();
        for (int I = 0; I <= AArr.Length; I++) {
            MexKouhoSet.Add(I);
        }

        int[] CntArr = new int[AArr.Max() + 1];

        int Answer = int.MaxValue;
        for (int I = 0; I <= UB; I++) {
            CntArr[AArr[I]]++;

            // Mexの候補から消す
            if (Answer > AArr[I]) {
                MexKouhoSet.Remove(AArr[I]);
            }

            // 区間の範囲外になった要素の削除
            if (I >= M) {
                int RemoveInd = I - M;
                int RemoveVal = AArr[RemoveInd];
                CntArr[RemoveVal]--;

                if (CntArr[RemoveVal] == 0) {
                    if (Answer > RemoveVal) {
                        MexKouhoSet.Add(RemoveVal);
                    }
                }
            }

            // 現在の区間のMexを求める
            if (I >= M - 1) {
                int CurrMex = MexKouhoSet.Min;
                Answer = Math.Min(Answer, CurrMex);
            }
        }
        Console.WriteLine(Answer);
    }
}

Submission Info

Judge Result