#include <stdio.h>
#include <stdlib.h>

int gcd(int a, int b)
{
	if (a == 0) return b;
	else return gcd(b % a, a);
}

int main()
{
	int a, b, c, d;
	scanf("%d %d %d %d", &a, &b, &c, &d);
	
	int g = gcd(abs(a), abs(b));
	if (g != gcd(abs(c), abs(d))) {
		printf("-1\n");
		fflush(stdout);
		return 0;
	} else if (g == 0) {
		printf("0\n");
		fflush(stdout);
		return 0;
	}
	
	int k = 0, x, ans[1001][2];
	if (a <= 0) {
		if (b == 0) {
			ans[k][0] = 2;
			ans[k++][1] = -1;
			b = -a;
		}
		if (b > 0) {
			x = abs(a) / b + 1;
			ans[k][0] = 1;
			ans[k++][1] = x;
			a += b * x;
		} else {
			x = abs(a) / abs(b) + 1;
			ans[k][0] = 1;
			ans[k++][1] = -x;
			a -= b * x;
		}
	}
	if (b <= 0) {
		if (a == 0) {
			ans[k][0] = 1;
			ans[k++][1] = -1;
			a = -b;
		}
		if (a > 0) {
			x = abs(b) / a + 1;
			ans[k][0] = 2;
			ans[k++][1] = x;
			b += a * x;
		} else {
			x = abs(b) / abs(a) + 1;
			ans[k][0] = 1;
			ans[k++][1] = -x;
			b -= a * x;
		}
	}
	while (a != g || b != g) {
		if (a > b) {
			x = a / b;
			if (a % b == 0) x--;
			ans[k][0] = 1;
			ans[k++][1] = -x;
			a -= b * x;
		} else {
			x = b / a;
			if (b % a == 0) x--;
			ans[k][0] = 2;
			ans[k++][1] = -x;
			b -= a * x;
		}
	}
	
	int kk = 0, anss[1001][2];
	a = c;
	b = d;
	if (a <= 0) {
		if (b == 0) {
			anss[kk][0] = 2;
			anss[kk++][1] = 1;
			b = -a;
		}
		if (b > 0) {
			x = abs(a) / b + 1;
			anss[kk][0] = 1;
			anss[kk++][1] = -x;
			a += b * x;
		} else {
			x = abs(a) / abs(b) + 1;
			anss[kk][0] = 1;
			anss[kk++][1] = x;
			a -= b * x;
		}
	}
	if (b <= 0) {
		if (a == 0) {
			anss[kk][0] = 1;
			anss[kk++][1] = 1;
			a = -b;
		}
		if (a > 0) {
			x = abs(b) / a + 1;
			anss[kk][0] = 2;
			anss[kk++][1] = -x;
			b += a * x;
		} else {
			x = abs(b) / abs(a) + 1;
			anss[kk][0] = 1;
			anss[kk++][1] = x;
			b -= a * x;
		}
	}
	while (a != g || b != g) {
		if (a > b) {
			x = a / b;
			if (a % b == 0) x--;
			anss[kk][0] = 1;
			anss[kk++][1] = x;
			a -= b * x;
		} else {
			x = b / a;
			if (b % a == 0) x--;
			anss[kk][0] = 2;
			anss[kk++][1] = x;
			b -= a * x;
		}
	}
	
	int i;
	printf("%d\n", k + kk);
	for (i = 0; i < k; i++) printf("%d %d\n", ans[i][0], ans[i][1]);
	for (i = kk - 1; i >= 0; i--) printf("%d %d\n", anss[i][0], anss[i][1]);
	fflush(stdout);
	return 0;
}