import sys, time
 
def digdp(s):
  cn =  len(s)
  dp = [[0,0] for z in range(9*cn+11)]
  dp[0][0] = 1
 
  for i in range(cn):
    ndp = [[0,0] for z in range(9*cn+11)]
    for j in range(cn*9 + 1):
      for d in range(10):
        if j + d > cn*9: continue
        if d < int(s[i]): ndp[j+d][1] += dp[j][0]
        elif d == int(s[i]): ndp[j+d][0] += dp[j][0]
        ndp[j+d][1] += dp[j][1]
    dp = ndp
 
  rtn = []
  for z in dp: rtn.append(z[0] + z[1])
  return rtn
 
 
for line in sys.stdin:
  X, Y = line.split()
  X1 = str(int(X) - 1) # X-1
 
  vx = digdp(X1) if X1 != '-1' else [0]
  vy = digdp(Y)
 
  for i in range(len(vx)): vy[i] -= vx[i]
 
  print( "{} {} --> {}".format(X, Y, max(vy)))
 

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