text: #!/usr/bin/env python3
  
  
  def solution(a: list) -> int:
      """
      >>> solution([])
      0
      >>> solution([10, 2, 5, 1, 8, 20])
      1
      >>> solution([10, 50, 5, 1])
      0
      """
      if len(a) < 3:
          return 0
      a = sorted(a, reverse=True)
      for i in range(len(a) - 2):
          if a[i] + a[i + 1] > a[i + 2] and \
             a[i] + a[i + 2] > a[i + 1] and \
             a[i + 1] + a[i + 2] > a[i]:
              return 1
      return 0
  