Editing 4140 - bug (section)

==Rezolvare==
<syntaxhighlight lang="python" line>
#4140 bug
def check_input(query, preferred_number):
    # Verificăm dacă query-ul este valid
    if query != 1 and query != 2:
        return "Eroare: Query-ul trebuie să fie 1 sau 2."
    
    # Verificăm dacă preferred_number este un număr natural nenul
    if preferred_number <= 0:
        return "Eroare: Numărul preferat trebuie să fie un număr natural nenul."
    
    return None

def is_subsequence(number, preferred_number):
    number_str = str(number)
    preferred_str = str(preferred_number)
    i = 0
    
    for digit in preferred_str:
        if digit == number_str[i]:
            i += 1
            if i == len(number_str):
                return True
    return False

def find_smallest_non_subsequence(preferred_number):
    i = 1
    while True:
        if not is_subsequence(i, preferred_number):
            return i
        i += 1

def main():
    # Citim datele de intrare
    with open("bug.in", "r") as f:
        query = int(f.readline())
        preferred_number = int(f.readline())

    # Verificăm datele de intrare
    error_message = check_input(query, preferred_number)
    if error_message:
        with open("bug.out", "w", encoding='utf-8') as f:
            f.write(error_message)
        return

    # Rezolvăm cerința
    if query == 1:
        smallest_non_subsequence = find_smallest_non_subsequence(preferred_number)
        with open("bug.out", "w", encoding='utf-8') as f:
            f.write(str(len(str(smallest_non_subsequence))))
    else:
        smallest_non_subsequence = find_smallest_non_subsequence(preferred_number)
        with open("bug.out", "w", encoding='utf-8') as f:
            f.write(str(smallest_non_subsequence))

# Apelăm funcția main pentru a rezolva cerința
if __name__ == "__main__":
    main()
</syntaxhighlight>