using System;
using System.Linq;
using System.Collections.Generic;
using Debug = System.Diagnostics.Debug;
using SB = System.Text.StringBuilder;
//using System.Numerics;
//using static System.Math;
namespace Program {
    public class Solver {
        //Random rnd = new Random();
        public void Solve() {
            var sx = ri; var sy = ri;
            var gx = ri; var gy = ri;
            var n = ri;
            const int D = 150;
            var dist = new int[2 * D, 2 * D, 6];
            for (int i = 0; i < 2 * D; i++)
                for (int j = 0; j < 2 * D; j++)
                    for (int k = 0; k < 6; k++)
                        dist[i, j, k] = 1000000000;
            for (int i = 0; i < n; i++)
            {
                var x = ri + D;
                var y = ri + D;
                for (int k = 0; k < 6; k++)
                    dist[x, y, k] = -1000000000;
            }
            int[] dx = { 0, 1, 1, 0, -1, -1, 0 };
            int[] dy = { 1, 0, -1, -1, -1, 0, 0 };
            var lx = ri; var ly = ri;
            var q = new Queue<state>();
            dist[sx + D, sy + D, 0] = 0;
            q.Enqueue(new state(sx, sy, 0, 0));
            for (; ; )
            {
                if (q.Count == 0) break;
                var nq = new Queue<state>();
                while (q.Any())
                {
                    var p = q.Dequeue();
                    if (dist[p.x + D, p.y + D, p.z] < p.v) continue;
                    //Debug.WriteLine($"{p.x} {p.y} {p.z} {p.v}");
                    if (p.x == gx && p.y == gy)
                    {
                        Console.WriteLine(p.v);
                        return;
                    }
                    for (int k = 0; k < 7; k++)
                    {
                        var nx = p.x + dx[k];
                        var ny = p.y + dy[k];
                        if (k % 3 != 0 && Math.Abs(p.x) % 2 != 0) ny++;
                        var nz = (p.z + 1) % 6;
                        var nd = p.v;
                        if (Math.Abs(nx) > lx || Math.Abs(ny) > ly) continue;
                        if (k != Math.Abs(p.x * p.y * p.z) % 6) nd++;
                        if (dist[nx + D, ny + D, nz] > nd)
                        {
                            dist[nx + D, ny + D, nz] = nd;
                            if (nd == p.v) q.Enqueue(new state(nx, ny, nz, nd));
                            else nq.Enqueue(new state(nx, ny, nz, nd));
                        }
                    }
                }
                q = nq;

            }
            Console.WriteLine(-1);
        }
        const long INF = 1L << 60;
        int ri { get { return sc.Integer(); } }
        long rl { get { return sc.Long(); } }
        double rd { get { return sc.Double(); } }
        string rs { get { return sc.Scan(); } }
        public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput());

        static T[] Enumerate<T>(int n, Func<int, T> f) {
            var a = new T[n];
            for (int i = 0; i < n; ++i) a[i] = f(i);
            return a;
        }
        static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; }
    }
}

#region main
static class Ex {
    /*
    static public string AsString(this IEnumerable<char> ie) { return new string(ie.ToArray()); }
    static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ") {
        return string.Join(st, ie);
    }*/
    static public void Main() {
        Console.SetOut(new Program.IO.Printer(Console.OpenStandardOutput()) { AutoFlush = false });
        var solver = new Program.Solver();
        solver.Solve();
        Console.Out.Flush();
    }
}
#endregion
#region Ex
namespace Program.IO {
    using System.IO;
    using System.Text;
    using System.Globalization;

    public class Printer: StreamWriter {
        public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } }
        public Printer(Stream stream) : base(stream, new UTF8Encoding(false, true)) { }
    }

    public class StreamScanner {
        public StreamScanner(Stream stream) { str = stream; }

        public readonly Stream str;
        private readonly byte[] buf = new byte[1024];
        private int len, ptr;
        public bool isEof = false;
        public bool IsEndOfStream { get { return isEof; } }

        private byte read() {
            if (isEof) return 0;
            if (ptr >= len)
            {
                ptr = 0;
                if ((len = str.Read(buf, 0, 1024)) <= 0)
                {
                    isEof = true;
                    return 0;
                }
            }
            return buf[ptr++];
        }

        public char Char() {
            byte b = 0;
            do b = read(); while ((b < 33 || 126 < b) && !isEof);
            return (char)b;
        }
        public string Scan() {
            var sb = new StringBuilder();
            for (var b = Char(); b >= 33 && b <= 126; b = (char)read()) sb.Append(b);
            return sb.ToString();
        }
        public string ScanLine() {
            var sb = new StringBuilder();
            for (var b = Char(); b != '\n' && b != 0; b = (char)read()) if (b != '\r') sb.Append(b);
            return sb.ToString();
        }
        public long Long() { return isEof ? long.MinValue : long.Parse(Scan()); }
        public int Integer() { return isEof ? int.MinValue : int.Parse(Scan()); }
        public double Double() { return isEof ? double.NaN : double.Parse(Scan(), CultureInfo.InvariantCulture); }
    }
}

#endregion

class state {
    public int x, y, z, v;
    public state(int a, int b, int c, int d) {
        x = a; y = b; z = c; v = d;
    }
}



Measured memory_bytes: 14452