#!/usr/bin/env python3

import sys


def maths(nums, sec=False):
    if len(nums) == 2:
        yield nums[0] * nums[1]
        yield nums[0] + nums[1] 
        if sec: yield int(str(nums[0]) + str(nums[1]))
    else:
        yield from maths([nums[0] * nums[1]] + nums[2:], sec)
        yield from maths([nums[0] + nums[1]] + nums[2:], sec)
        if sec: yield from maths([int(str(nums[0]) + str(nums[1]))] + nums[2:], sec)


if __name__ == '__main__':
    lines = [line.strip('\n') for line in open(sys.argv[1])]
    res1, res2 = 0, 0
    for line in lines:
        test, nums = line.split(': ')
        nums = [int(n) for n in nums.split(' ')]
        if int(test) in maths(nums): res1 += int(test)
        if int(test) in maths(nums, True): res2 += int(test)

    # challenge 1
    print(f"challenge 1:\n{res1}\n")

    # challenge 2
    print(f"challenge 2:\n{res2}")