dm2_premiere_2020.py

Created on October 06, 2019

533 Bytes

def existe(s, p):
  """Détermine s'il existe u et v
  tels que s = u + v et p = u * v"""
  delta = s ** 2 - 4 * p
  if delta >= 0:
    return True
  else:
    return False
    
def existe2(s, p):
  """Détermine s'il existe u et v
  tels que s = u + v et p = u * v
  Version plus élégante"""
  return s ** 2 - 4 * p >= 0


def seuil(s):
  """Retourne lee rang du plus petit 
  nombre triangulaire >= s"""
  n = 0
  while n * (n+1) / 2 < s:
    n = n + 1
  return n
  
print(existe(9,2))
print(seuil(1000))

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