using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[] NMi => ReadLine().Split().Select(c => int.Parse(c) - 1).ToArray();
    static int[][] NMap(int n) => Enumerable.Repeat(0, n).Select(_ => NMi).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var p = NList;
        var (a, b, c, d) = (p[0], p[1], p[2], p[3]);
        var s = Multiply(a, b, c, d);
        WriteLine(s);
    }
    static string Multiply(int a, int b, int c, int d)
    {
        var (alist, aord) = Rem(a, b);
        var (clist, cord) = Rem(c, d);
        if (alist[^1][0] == clist[^1][0])
        {
            var sb = new System.Text.StringBuilder();
            sb.Append(aord.Count + cord.Count);
            foreach (var ai in aord)
            {
                sb.AppendLine();
                sb.Append($"{ai[0]} {ai[1]}");
            }
            cord.Reverse();
            foreach (var ci in cord)
            {
                sb.AppendLine();
                sb.Append($"{ci[0]} {-ci[1]}");
            }
            return sb.ToString();
        }
        else
        {
            return "-1";
        }
    }
    static (List<long[]> list, List<long[]> ord) Rem(long a, long b)
    {
        var list = new List<long[]>();
        var ord = new List<long[]>();
        list.Add(new long[] { a, b });
        if (a < 0)
        {
            if (b < 0)
            {
                var r = (- a - b - 1) / (- b);
                ord.Add(new long[] { 1, - r });
                a -= b * r;
            }
            else if (b > 0)
            {
                var r = (- a + b - 1) / b;
                ord.Add(new long[] { 1, r });
                a += b * r;
            }
            else
            {
                ord.Add(new long[] { 2, -1 });
                b -= a;
                list.Add(new long[] { a, b });
                ord.Add(new long[] { 1, 2 });
                a += 2 * b;
            }
            list.Add(new long[] { a, b });
        }
        if (b < 0)
        {
            if (a == 0)
            {
                ord.Add(new long[] { 1, -1 });
                a -= b;
                list.Add(new long[] { a, b });
                ord.Add(new long[] { 2, 2 });
                b += a * 2;
                list.Add(new long[] { a, b });
            }
            else
            {
                var r = (- b + a - 1) / a;
                ord.Add(new long[] { 2, r });
                b += a * r;
                list.Add(new long[] { a, b });
            }
        }
        while (a != b)
        {
            if (a == 0 && b == 0) break;
            if (a == 0)
            {
                ord.Add(new long[] { 1, 1 });
                a += b;
            }
            else if (b == 0)
            {
                ord.Add(new long[] { 2, 1 });
                b += a;
            }
            else if (a > b)
            {
                var r = a / b - (a % b == 0 ? 1 : 0);
                ord.Add(new long[] { 1, - r });
                a -= b * r;
            }
            else
            {
                var r = b / a - (b % a == 0 ? 1 : 0);
                ord.Add(new long[] { 2, - r });
                b -= a * r;
            }
            list.Add(new long[] { a, b });
        }
        return (list, ord);
    }
}