with open('puzzle.txt', 'r') as f:
    lines = f.read().splitlines()

import operator

operations = {
    0: operator.add,
    1: operator.mul
}

def operator_increment(depth, result, value_list, operator_list, operation_list):
    for calc_operator in operator_list:
        if depth == 0:
            calc = value_list[0]
            for index, value in enumerate(value_list[:-1]):
                calc = operator_list[operation_list[-index]](calc, value_list[index + 1])

            if calc == result:
                return True, calc

        else:
            operation_list[depth - 1] = calc_operator
            return_status, calc = operator_increment(depth - 1, result, value_list, operator_list, operation_list)
            if return_status:
                return return_status, calc

    return False, 0

values = {}

for line in lines:
    test_value, equation_values = line.split(':')
    test_value = int(test_value)
    equation_values = list(map(int, equation_values.strip().split(' ')))
    values.update({test_value: equation_values})

total_calibration = 0

for result in values:
    operation_list = [None] * (len(values[result]) - 1)
    return_status, calc = operator_increment(len(values[result])-1, result, values[result], operations, operation_list)
    if return_status:
        total_calibration += calc

print(total_calibration)