Editing 3650 - Perechi3 (section)

==Rezolvare==
<syntaxhighlight lang="python" line>
#3650 perechi3
def citeste_numere_hexazecimale(fisier):
  numere = []
  for linie in fisier:
    numere.extend(linie.split())
  return numere

def se_potrivesc(numar1, numar2):
  cifre1 = set(numar1)
  cifre2 = set(numar2)
  if any(cifra in cifre2 for cifra in cifre1):
    return False
  cifre_unite = cifre1.union(cifre2)
  return len(cifre_unite) == 16

def numara_perechi_potrivite(numere):
  count = 0
  for i in range(len(numere)):
    for j in range(i + 1, len(numere)):
      if se_potrivesc(numere[i], numere[j]):
        count += 1
  return count

def verifica_date_intrare(numere):
  if len(numere) < 2 or len(numere) > 200000:
    return False
  for numar in numere:
    if not all(caracter.isdigit() or caracter.upper() in "ABCDEF" for caracter in numar):
      return False
  return True

def main():
  with open("perechi.in", "r") as fin:
    numere_hexazecimale = citeste_numere_hexazecimale(fin)

  if not verifica_date_intrare(numere_hexazecimale):
    with open("perechi.out", "w") as fout:
      fout.write("Date de intrare invalide!")
    return

  numar_perechi_potrivite = numara_perechi_potrivite(numere_hexazecimale)

  with open("perechi.out", "w") as fout:
    fout.write(str(numar_perechi_potrivite))

if __name__ == "__main__":
  main()
</syntaxhighlight>