n = int(input())
brcks = input()

ret = ""
for i in range(1, n):
    prev = brcks[i - 1]
    current = brcks[i]

    ret += prev
    if prev == ")" and current == "(":
        ret += "*"
    elif prev == "(" and current == ")":
        ret += "1"
    elif prev == ")" and current == ")":
        ret += "+1"
ret += ")"

print(ret)
print(eval(ret))