Editing 1394 - Devt (section)

== Rezolvare ==
<syntaxhighlight lang="python" line>
#1394 - Devt
def is_valid_input(n, k, intervals):
    if not (0 <= k <= 5000):
        return False
    if not (1 <= n <= 100000):
        return False
    for a, b in intervals:
        if not (0 <= a <= b <= n):
            return False
    return True

def count_numbers_in_interval(a, b, sequence):
    count = 0
    for num in sequence:
        if a <= num <= b:
            count += 1
    return count

def main():
    # Citirea datelor de intrare
    with open("devtin.txt", "r") as file:
        n, k = map(int, file.readline().split())
        intervals = [list(map(int, file.readline().split())) for _ in range(k)]

    # Verificare restricții
    if not is_valid_input(n, k, intervals):
        with open("devtout.txt", "w") as file_out:
            file_out.write("Nu au fost respectate cerintele impuse")
        return

    # Calculul răspunsurilor
    answers = []
    sequence = [1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25]  # Acesta este șirul "devt"

    for interval in intervals:
        a, b = interval
        result = count_numbers_in_interval(a, b, sequence)
        answers.append(result)

    # Scrierea rezultatelor în fișierul de ieșire
    with open("devtout.txt", "w") as file:
        for answer in answers:
            file.write(str(answer) + "\n")

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