def merge_tuples(line_a, line_b, line_c):
    """
    funkce merge tuples - spojujici sekvence
    """

    dict = {}

    for tuplik in line_a:
        id = tuplik[0]
        count = tuplik[1]
        list = [count, 0, 0]
        dict[id] = list

    for tuplik in line_b:
        id = tuplik[0]
        count = tuplik[1]

        if id in dict:
            oldList = dict[id]
        else:
            oldList = [0, 0, 0]

        list = [oldList[0], count, oldList[2]]
        dict[id] = list

    for tuplik in line_c:
        id = tuplik[0]
        count = tuplik[1]

        if id in dict:
            oldList = dict[id]
        else:
            oldList = [0, 0, 0]

        list = [oldList[0], oldList[1], count]
        dict[id] = list

    return dict

if __name__ == '__main__':

    line_a = ((1, 3), (3, 4), (10, 2))
    line_b = ((1, 2), (2, 4), (5, 2))
    line_c = ((1, 5), (3, 2), (7, 3))

    expected_result = {1: [3, 2, 5],
                       2: [0, 4, 0],
                       3: [4, 0, 2],
                       5: [0, 2, 0],
                       7: [0, 0, 3],
                       10: [2, 0, 0]}

    print(expected_result == merge_tuples(line_a, line_b, line_c))