//#define READ_FILE72 //When you want to input from a file ,define this 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

using CHY72;



namespace CHY72{
    
    
    public class PointXY{
        public int X , Y;
        public int SQLength() { return X * X + Y * Y; }
        public bool Flag = false;
        public int ID = -1;
        public PointXY(int _X,int _Y,int _ID = -1) {
            X = _X; Y = _Y; ID = _ID;
        }
        public PointXY(PointXY P1, int _X = 0, int _Y = 0) {
            X = P1.X + _X; Y = P1.Y + _Y; ID = P1.ID;
        }
        public static bool operator ==(PointXY P1, PointXY P2) {
            return (P1.X== P2.X && P1.Y == P2.Y);
        }
        public static bool operator !=(PointXY P1, PointXY P2) {return !(P1 ==P2);}
        public override int GetHashCode() {return X.GetHashCode() ^ Y.GetHashCode();}
        public override bool Equals(object obj) {
            if (obj == null || this.GetType() != obj.GetType()) {return false;}
            return (this == (PointXY)obj);
        }

        public string CurrentInformation() {
            return "x:" + X + "  y:" + Y + "  ID:" + ID;
        } 

    }

    public class Lib72 {
        public static T[][] CopyJagArray2<T>(T[][] _Base){
            T[][] NewArray = new T[_Base.Length][];
            for (int i = 0; i < _Base.Length; i++) {
                NewArray[i] = new T[_Base[i].Length ];
                for (int j = 0; j < _Base[i].Length; j++) {
                    NewArray[i][j] = _Base[i][j];
                }
            }
            return NewArray;
        }
        public static T[][][] CopyJagArray3<T>(T[][][] _Base) {
            T[][][] NewArray = new T[_Base.Length][][];
            for (int i = 0; i < _Base.Length; i++) {
                NewArray[i] = CopyJagArray2(_Base[i] ); ;
            }
            return NewArray;
        }

        public static bool isInRect(int _X, int _Y, int _W, int _H) { 
            return (_X >= 0 && _Y >= 0 && _X < _W && _Y < _H); }
        public static int NumFromChar(char CNUM) { return CNUM - 48; }
        public static char LoopChar52(char _C, int n) {
            //Char(C#) uses Uni-Code
            //33 !  "#$%&'(  41 )
            //42 * +,-.  47/
            //48 0  .... 57 9
            //58 :;<=>? 64 @
            //65 A .... 90 Z
            //91 [\]^_ 96`
            //97 a .... 122 z
            int i_C = (int)_C;
            if (i_C > 64 && i_C < 91) i_C -= 65;//0~25 AZ
            else if (i_C > 96 && i_C < 123) i_C -= 71;//26~51 az
            else return '0';
            int RESULT = Modulo ((i_C + n ) , 52);
            if(RESULT < 26) return (char)(RESULT+65);
            else return (char)(RESULT + 71);
        }
        public static int Modulo(int A, int B) {
            // -6 % 5 == -1 ; Modulo (-6 , 5 ) == 4
            int Result = A % B;
            if (Result >= 0) { return Result; }
            else return Result + B;
        }
        public static int intFromHourMinSec(int _h,int _m,int _s) {
            return _s + 60 * _m + 3600 * _h;
        }

        public static int[] KETAArray(int Num) {return KETAArray(Num.ToString()); }
        public static int[] KETAArray(string Num) {
            char[] cKETA = Num.ToCharArray();
            int[] iKETA = new int[cKETA.Length];
            for (int i = 0; i < iKETA.Length; i++) {
                iKETA[i] = NumFromChar(cKETA[i]);
            }
            return iKETA;
        }
        public static int KETA(int Num) { return Num.ToString().ToCharArray().Length; }
        public static int FromKETAArray(int[] _ketaarray) {
            int result = 0;
            int[] R_ketaarray = _ketaarray.Reverse().ToArray(); 
            for (int i = 0,j=1; i < R_ketaarray.Length; i++,j *=10) {
                result += j * R_ketaarray[i];
            }
            return result;
        }
        public static bool isPrime(int p) {
            if (p != 2 && p % 2 == 0) return false;
            if (p == 1) return false;
            int SQp = (int)(Math.Sqrt(p));
            for (int i = 3; i <= SQp; i++) {
                if (p % i == 0) return false;
            }
            return true;
        } 
    }
}    

public class Program {
    static bool ReadLine_1(ref int num1, bool Fin0 = true) {
        string str = Console.ReadLine();
        num1 = int.Parse(str);
        return (Fin0 && num1 == 0);
    }
    static int  ReadLine_1() {
        return  int.Parse(Console.ReadLine());
    }
    static bool ReadLine_2(ref int num1, ref int num2, char Spliter = ' ', bool Fin0 = true,int FinNum =0) {
        string str = Console.ReadLine();
        num1 = int.Parse(str.Split(Spliter)[0]);
        num2 = int.Parse(str.Split(Spliter)[1]);
        return (Fin0 && num1 == FinNum && num2 == FinNum);
    }
    static int[] ReadLine_Array(char Spliter = ' ') {
        return Console.ReadLine().Split(Spliter).Select(s => int.Parse(s)).ToArray();
    }

#if READ_FILE72
    static bool FileReadLine_1(ref int num1, bool Fin0 = true) {
        string str = cReader.ReadLine();
        num1 = int.Parse(str);
        return (Fin0 && num1 == 0);
    }
    static int FileReadLine_1() {
        return int.Parse(cReader.ReadLine());
    }
    static bool FileReadLine_2(ref int num1, ref int num2, char Spliter = ' ', bool Fin0 = true, int FinNum = 0) {
        string str = cReader.ReadLine();
        num1 = int.Parse(str.Split(Spliter)[0]);
        num2 = int.Parse(str.Split(Spliter)[1]);
        return (Fin0 && num1 == FinNum && num2 == FinNum);
    }
    static int[] FileReadLine_Array(char Spliter = ' ') {
        return cReader.ReadLine().Split(Spliter).Select(s => int.Parse(s)).ToArray();
    }

    const string ReadFileName = "Read.txt";
    static bool ReadFromLocal = true;
    static System.IO.StreamReader cReader ;
#endif

    const int DefaultMax = 72727272;


    static void Main(string[] args) {
        #if READ_FILE72  
        cReader = ReadFromLocal ?
            new System.IO.StreamReader(System.IO.Directory.GetCurrentDirectory() + "\\" + ReadFileName, System.Text.Encoding.Unicode) :
            new System.IO.StreamReader(ReadFileName, System.Text.Encoding.Unicode);
        #endif

        Main72();

        #if READ_FILE72
            cReader.Close();
        #endif
    }

    class MeAndMAP {
        public int[][] Map;
        public PointXY Me;
        public MeAndMAP(PointXY _Me, int[][] _Map,int _Now = 0) {
            Me = _Me; 
            Map =_Map;
            Me.ID = _Now;
        }
        
        public MeAndMAP(MeAndMAP MMP) {
            Me = new PointXY(MMP.Me);
            Map = Lib72.CopyJagArray2(MMP.Map);
            Me.ID = MMP.Me.ID;
        }

        public int ObjectGo1(int x, int y ,int i) {
            int NextX = Me.X +x, NextY = Me.Y + y;
            if (Lib72.isInRect(NextX,NextY, h, w)) {
                switch (Map[NextX][NextY] ) {
                    case 0:
                        Me = new PointXY(Me,x,y);
                        return 0;
                    case 1:
                        if (i != 0) Map[NextX][NextY] = 0;
                        else { Failed = true; }
                        return 1;
                    case 3:
                        return 3;
                }
                return -2;
            }else return -1;
        }

        public void Go(int x, int y) {
            Me.ID++;
            for (int i = 0; true; i++ ) {
                int Go1 = ObjectGo1(x, y,i);
                if (Go1 == 1) break;
                if (Go1 == -1) { Failed = true; break; }
                if (Go1 == 3) { Goaled = true; break; }
            }
        }

        public bool Goaled = false;
        public bool Failed = false;
    }

    
    static int w, h;

    static void Main72() {
        while (true) {
            w = 0; h = 0;
            if (ReadLine_2(ref w, ref h)) return;
            int[][] Map = new int[h][];
            for (int i = 0; i < h; i++) {Map[i] = ReadLine_Array();}
            PointXY Start = new PointXY(0,0);
            
            for (int i = 0; i < h; i++) {
                for (int j = 0; j < w; j++) {
                    if (Map[i][j] == 2) { Start = new PointXY(i, j); Map[i][j] = 0; break; }
                }
            }
            Queue<MeAndMAP> QMM = new Queue<MeAndMAP>();
            QMM.Enqueue(new MeAndMAP(Start,Map,0));
            int OKNum = -2;
            while (true) {

                if (QMM.Count == 0) break;
                MeAndMAP NowQMM = QMM.Dequeue();
                if (NowQMM.Me.ID >= 10) break;

                MeAndMAP QMM1 = new MeAndMAP(NowQMM);
                QMM1.Go(0, 1);
                if (QMM1.Goaled) { OKNum = NowQMM.Me.ID; break; }
                else if (!QMM1.Failed) QMM.Enqueue(QMM1);


                MeAndMAP QMM2 = new MeAndMAP(NowQMM);
                QMM2.Go(0, -1);
                if (QMM2.Goaled) { OKNum = NowQMM.Me.ID; break; }
                else if (!QMM2.Failed) QMM.Enqueue(QMM2);

                MeAndMAP QMM3 = new MeAndMAP(NowQMM);
                QMM3.Go(1, 0);
                if (QMM3.Goaled) { OKNum = NowQMM.Me.ID; break; }
                else if (!QMM3.Failed) QMM.Enqueue(QMM3);
                MeAndMAP QMM4 = new MeAndMAP(NowQMM);
                QMM4.Go(-1, 0);
                if (QMM4.Goaled) { OKNum = NowQMM.Me.ID; break; }
                else if (!QMM4.Failed) QMM.Enqueue(QMM4);

            }
            Console.WriteLine(++OKNum); 
            

        }




    }

}

Measured memory_bytes: 261332