def count_gold(pyramid):
    pyramid = [[i for i in x] for x in pyramid]
    while len(pyramid) != 1:
        for i in range(len(pyramid[len(pyramid) - 2])):
            pyramid[len(pyramid) - 2][i] = pyramid[len(pyramid) - 2][i] + max(pyramid[len(pyramid) - 1][i], pyramid[len(pyramid) - 1][i + 1])
        pyramid.remove(pyramid[len(pyramid) - 1])
    return pyramid[0][0]


if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert count_gold((
        (1,),
        (2, 3),
        (3, 3, 1),
        (3, 1, 5, 4),
        (3, 1, 3, 1, 3),
        (2, 2, 2, 2, 2, 2),
        (5, 6, 4, 5, 6, 4, 3)
    )) == 23, "First example"
    assert count_gold((
        (1,),
        (2, 1),
        (1, 2, 1),
        (1, 2, 1, 1),
        (1, 2, 1, 1, 1),
        (1, 2, 1, 1, 1, 1),
        (1, 2, 1, 1, 1, 1, 9)
    )) == 15, "Second example"
    assert count_gold((
        (9,),
        (2, 2),
        (3, 3, 3),
        (4, 4, 4, 4)
    )) == 18, "Third example"