import multiprocessing


def worker_function(list_of_int):
    result = 0
    for i in range(len(list_of_int)):
        result += list_of_int[i] ** i
    return result


def process_array(list_of_lists):
    with multiprocessing.Pool() as pool:
        result = pool.map(worker_function, list_of_lists)
    return sum(result)


if __name__ == "__main__":
    input_list = input()
    list_of_string_lists = input_list[1:len(input_list) - 1].split(", ")
    list_of_int_lists = []
    for list_str in list_of_string_lists:
        list_of_int_lists.append(list(map(int, list_str[1:len(list_str) - 1].split(' '))))
    print(process_array(list_of_int_lists))