from typing import List


def mediate_heat(heat_vector: List[List[int]]) -> List[int]:
    """
    Calculate the mean heat vector between the provided heat vectors.

    :arg heat_vector: a list of heat vectors of the same size
    :return: the mean heat vector
    """

    mean_vector = []
    vectors_num = len(heat_vector)

    # Assume that all heat vectors are of the same size
    for i in range(0, len(heat_vector[0])):
        sum_temp = 0
        for v in heat_vector:
            sum_temp += v[i]

        mean_vector.append(int(sum_temp / vectors_num))

    return mean_vector