def two(a, b):
  out = set([])
  out.add(a + b)
  out.add(a * b)
  '''if a != b:
    out.add(abs(a - b))'''
  out.add(a - b)
  out.add(b - a)
  if a != 0:
    out.add(b / float(a))
  if b != 0:
    out.add(a / float(b))
  return out

def three(a, b, c):
  out = set([])
  for i in two(a, b):
    out |= two(i, c)
  for i in two(a, c):
    out |= two(i, b)
  for i in two(b, c):
    out |= two(i, a)
  return out

def four(a, b, c, d):
  first = two(a, b)
  second = two(c, d)
  out = set([])
  for i in first:
    out |= three(i, c, d)
    for j in second:
      out |= two(i, j)
  for j in second:
    out |= three(j, a, b)
  return out
  
def calc(a, b, c, d):
  tmp = set([])
  tmp |= four(a, b, c, d)
  tmp |= four(a, c, b, d)
  tmp |= four(a, d, b, c)
  out = []
  for i in tmp:
    if i == int(i) > 0:
      out.append(int(i))
  return sorted(out)


maxx = [0, 0]
for m in xrange(1, 10):
  for n in xrange(m + 1, 10):
    for s in xrange(n + 1, 10):
      for t in xrange(s + 1, 10):
        tmp = calc(m, n, s, t)
        for i in xrange(len(tmp)):
          if i + 1 != tmp[i]:
            break
        if i > maxx[0]:
          maxx = [i, (m, n, s, t)]
print maxx