#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;


const int N = 1e5 + 10;

vector<pii> l, r;

void gcd(vector<pii> &v, int &x, int &y) {
    if(y == 0) return;
    v.push_back({1, -1});   // x - y y
    v.push_back({2, 1});    // x - y x
    v.push_back({1, -1});   // -y    x 
    v.push_back({2, -x / y}); //-y x 
    int a = x % abs(y), b = -y;
    gcd(v, x = b, y = a);
}

int main() {
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    gcd(l, a, b);
    gcd(r, c, d);
    //cout << a << b << c << d;
    if(abs(a) == abs(c)) {
        if(a != c) {
            r.push_back({1, -1});   // x - y y
            r.push_back({2, 1});    // x - y x
            r.push_back({1, -1});   // -y    x 
            r.push_back({1, -1});   // x - y y
            r.push_back({2, 1});    // x - y x
            r.push_back({1, -1});   // -y    x 
        }
        cout << l.size() + r.size() << "\n";
        for(auto [x, y] : l)
            cout << x << " " << y << "\n";
        while(r.size() > 0) {
            auto [x, y] = r.back();
            r.pop_back();
            cout << x << " " << -y << "\n";
        }
    }else{
        cout << -1;
    }
}