a,b,c,d = map(int,input().split())
c,d,a,b = a,b,c,d
from math import gcd
if gcd(a,b) != gcd(c,d):
  print(-1)
  exit()
cd = [[c,d]]
if c < 0:
  c = c + abs(d) * (10**8+10)
  cd.append([c,d])
if d < 0:
  d = d + (abs(d)//c+1)*c
  cd.append([c,d])
while c != 0 and d != 0:
  if c < d:
    d %= c
    cd.append([c,d])
  else:
    c %= d
    cd.append([c,d])
  
ab = [[a,b]]
if a < 0:
  a = a + abs(b) * (10**8+10)
  ab.append([a,b])
if b < 0:
  b = b + (abs(b)//a+1)*a
  ab.append([a,b])
while a != 0 and b != 0:
  if a < b:
    b %= a
    ab.append([a,b])
  else:
    a %= b
    ab.append([a,b])

if ab[-1] == cd[-1]:
  ab.pop()
  cd += ab[::-1]
else:
  ab.append([max(ab[-1]), max(ab[-1])])
  cd += ab[::-1]
print(len(cd)-1)
for i in range(1,len(cd)):
  c,d = cd[i]
  if c == cd[i-1][0]:
    dd = cd[i-1][1]
    tmp = (d - dd)//c
    print(2, tmp)
  else:
    cc = cd[i-1][0]
    tmp = (c-cc)//d
    print(1, tmp)