// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll = long long;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using pii = pair<int, int>;
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define repr(i, n) for (int i = (int)(n - 1); i >= 0; --i)

int gcd(int x, int y) {
    if (x < 0) x = -x;
    if (y < 0) y = -y;
    return x == 0 ? y : gcd(y % x, x);
}
int main() {
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    if (gcd(a, b) == gcd(c, d)) {
        vector<pii> fr, bk;
        while (1) {
            if (b == 0 && a < 0) {
                fr.emplace_back(2, -1);
                fr.emplace_back(1, 1);
                b = -a, a = 0;
            }
            if (a == 0) {
                a = abs(b);
                fr.emplace_back(1, a / b);
                fr.emplace_back(2, -b / a);
                b = 0;
            }
            if (b == 0) break;
            if (abs(a) > abs(b)) {
                fr.emplace_back(1, -a / b);
                a %= b;
            } else {
                fr.emplace_back(2, -b / a);
                b %= a;
            }
        }
        while (1) {
            if (d == 0 && c < 0) {
                bk.emplace_back(2, 1);
                bk.emplace_back(1, -1);
                d = -c, c = 0;
            }
            if (c == 0) {
                c = abs(d);
                bk.emplace_back(1, -c / d);
                bk.emplace_back(2, d / c);
                d = 0;
            }
            if (d == 0) break;
            if (abs(c) > abs(d)) {
                bk.emplace_back(1, c / d);
                c %= d;
            } else {
                bk.emplace_back(2, d / c);
                d %= c;
            }
        }
        reverse(bk.begin(), bk.end());

        cout << (int)(fr.size() + bk.size()) << endl;
        for (auto [x, y] : fr) cout << x << " " << y << '\n';
        for (auto [x, y] : bk) cout << x << " " << y << '\n';
    } else {
        cout << -1 << endl;
    }
    return 0;
}