ABC081-B Shift only

問題へのリンク

C#のソース

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");
            WillReturn.Add("8 12 40");
            //2
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("4");
            WillReturn.Add("5 6 8 10");
            //0
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("6");
            WillReturn.Add("382253568 723152896 37802240 379425024 404894720 471526144");
            //8
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();

        int[] AArr = InputList[1].Split(' ').Select(X => int.Parse(X)).ToArray();

        int Answer = 0;
        while (true) {
            for (int I = 0; I <= AArr.GetUpperBound(0); I++) {
                if (AArr[I] % 2 == 0) {
                    AArr[I] /= 2;
                }
                else {
                    Console.WriteLine(Answer);
                    return;
                }
            }
            Answer++;
        }
    }
}

解説

ナイーブに解いてます。