def mult(a, b):
    return a*b


def add(a, b):
    return a+b


with open(r'day6/input.txt', 'r') as input:
    lines = input.read().split('\n')[:-1]

op_pos = []

for i, char in enumerate(lines[-1]):
    if char != ' ':
        op_pos.append(i)
op_pos.append(len(lines[-1])+1)

sum = 0

for k in range(len(op_pos)-1):

    op = mult if lines[-1][op_pos[k]] == '*' else add
    res = 1 if op == mult else 0

    for i in range(op_pos[k], op_pos[k+1]-1):

        current_number = ''

        for j in range(len(lines)-1):

            current_number += lines[j][i]

        print(current_number)
        res = op(res, int(current_number.strip()))

    sum += res


print(sum)