code: def solve(digit):
      phi = (1 + pow(5, 0.5)) / 2
      c = math.log10(5) / 2
      logphi = math.log10(phi)
      n = 1
      while True:
          if n * logphi - c >= digit - 1:
              return n
              break
          n = n + 1
  
label_desc: Use image node_id 1 for calling a global function with example usage: solve(digit) and returns: n