code: def schwefel_1_2(x: np.ndarray) -> float:
      cx = np.cumsum(x)
      return sphere(cx)
  
imports: from math import exp, sqrt, tanh
  import numpy
  import nevergrad.common.typing
  from nevergrad.common.decorators import Registry
label_desc: Use image node_id 24 for calling a global function with example usage: schwefel_1_2(x) and returns: sphere