Entrada: ["X:-1", "Y:1", "X:-4", "B:3", "X:5"] Salida: B:3,Y:1

def f(x, y, b):
  return x, y, b

x, y, b = f(1, 2, 3)

Python
def f(x, y, b):
  return x, y, b

x, y, b = f(1, 2, 3)

Ruby
def f(x, y, b)
  return x