""" day 7 part 1 """

import fileinput
import typing

def has_solution(goal, operands):
    # print(f'goal={goal} operands={operands}')


    if len(operands) == 0:
        return ''

    if len(operands) == 1:
        # print(f'{goal} == {operands[0]}?')
        return goal if goal == operands[0] else ''

    # check add
    here = operands[-1]
    subgoal = operands[:-1]

    if prev := has_solution(goal - here, subgoal):
        # print(f'{goal - here} + {here}?')
        return f'{prev} + {here}'
    if prev := not here or has_solution(goal / here, subgoal):
        # print(f'{goal / here} * {here}?')
        return f'{prev} * {here}'

    return ''

count = 0

for line in fileinput.input():
    goal, _, expr = line.strip().partition(':')
    # print(f'{goal} - {expr}')

    goal = int(goal)
    operands = [int(term) for term in expr.strip().split()]

    solution = has_solution(goal, operands)
    if solution:
        print(solution)
        count += goal

print(count)