Editing 1473 - Grupa Pregătitoare (section)

== Rezolvare == 
<syntaxhighlight lang="python" line>
#1473
def read_input():
    with open("grupapregatitoare.in", "r") as in_file:
        n, p = map(int, in_file.readline().split())
        values = []
        for _ in range(n):
            x, y = map(int, in_file.readline().split())
            values.append((x, y))
    return p, values


def validate_input(n, p, values):
    if not (3 <= n <= 2000):
        print("Datele introduse nu corespund cerintelor.")
        exit()

    if not (2 <= p <= 1000):
        print("Datele introduse nu corespund cerintelor.")
        exit()

    for x, y in values:
        if not (0 < x < 1001 and 0 < y < 1001):
            print("numerele de pe cartonas trebuie sa fie nenule si mai mici decat 1001")
            exit()
        if x % p == 0 or y % p == 0:
            return  # satisface conditia ca exista cel putin un numar divizibil cu p pe un cartonas

    print("nu exista cel putin un numar divizibil cu p pe un cartonas")
    exit()


def compute_result(p, values):
    nr1, nr2 = 0, 0
    suma = 0
    flag = False
    minim = 20000
    secpar = 0
    secimp = 0
    lp = 0
    li = 0
    maxim = 0
    lungi = 0
    lungp = 0

    for x, y in values:
        if x > y:
            suma += x
        else:
            suma += y
        if ((x % p == 0) and (x >= y)) or ((y % p == 0) and (y >= x)):
            flag = True
        if (x % p == 0) and (x < y) and (y - x < minim):
            minim = y - x
            nr1 = x
            nr2 = y
        if (y % p == 0) and (y < x) and (x - y < minim):
            minim = x - y
            nr1 = y
            nr2 = x
        if (x % 2 == 0) or (y % 2 == 0):
            secpar += 1
        else:
            if lp == 0:
                lungp = secpar
                lp = 1
            if secpar > maxim:
                maxim = secpar
            secpar = 0
        if (x % 2 == 1) or (y % 2 == 1):
            secimp += 1
        else:
            if li == 0:
                lungi = secimp
                li = 1
            if secimp > maxim:
                maxim = secimp
            secimp = 0

    if secpar + lungp > maxim:
        maxim = secpar + lungp
    if secimp + lungi > maxim:
        maxim = secimp + lungi

    return suma, flag, nr1, nr2, maxim


def write_output(result):
    with open("grupapregatitoare.out", "w") as out_file:
        suma, flag, nr1, nr2, maxim = result
        if flag:
            out_file.write(str(suma))
        else:
            out_file.write(str(suma - nr2 + nr1))
        out_file.write("\n" + str(maxim))


if __name__ == "__main__":
    with open("grupapregatitoare.in", "r") as in_file, open("grupapregatitoare.out", "w") as out_file:
        n, p = map(int, in_file.readline().split())
        values = [tuple(map(int, line.split())) for line in in_file]

        validate_input(n, p, values)

        result = compute_result(p, values)
        print("Datele introduse corespund cerintelor.")
        write_output(result)

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