Maks_12

from struct import *


FMT = dict(
    char='c',
    int8='b',
    uint8='B',
    int16='h',
    uint16='H',
    int32='i',
    uint32='I',
    int64='q',
    uint64='Q',
    float='f',
    double='d'
)


def parse(buf, offs, ty, order='>'):
    pattern = FMT[ty]
    size = calcsize(pattern)
    value = unpack_from(order + pattern, buf, offs)[0]
    return value, offs + size


def parse_d(buf, offs):
    d1, offs = parse(buf, offs, 'int8')
    d2 = []
    for _ in range(4):
        val, offs = parse(buf, offs, 'uint32')
        d2.append(val)
    d3, offs = parse(buf, offs, 'uint8')
    d4, offs = parse(buf, offs, 'int32')
    return dict(D1=d1, D2=d2, D3=d3, D4=d4), offs


def parse_c(buf, offs):
    c1, offs = parse(buf, offs, 'uint16')
    c2 = []
    for _ in range(8):
        val, offs = parse(buf, offs, 'float')
        c2.append(val)
    return dict(C1=c1, C2=c2), offs


def parse_b(buf, offs):
    b1, offs = parse(buf, offs, 'uint16')
    b2size, offs = parse(buf, offs, 'uint32')
    b2offs, offs = parse(buf, offs, 'uint32')
    b2 = ''
    for _ in range(b2size):
        val, b2offs = parse(buf, b2offs, "char")
        b2 += val.decode()
    return dict(B1=b1, B2=b2), offs


def parse_a(buf, offs):
    a1 = []
    for _ in range(2):
        val, offs = parse_b(buf, offs)
        a1.append(val)
    a2, offs = parse_c(buf, offs)
    a3, offs = parse(buf, offs, 'uint8')
    a4, offs = parse(buf, offs, 'uint8')
    a5, offs = parse(buf, offs, 'int8')
    a6offs, offs = parse(buf, offs, 'uint32')
    a6, offs = parse_d(buf, a6offs)
    return dict(A1=a1, A2=a2, A3=a3, A4=a4, A5=a5, A6=a6), offs


def main(stream):
    res, _ = parse_a(stream, 5)
    return res