ls = {
    '+':3,
    '-':3,
    '*':4,
    '/':4,
    '(':1,
    ')':1
}
stack = []
queue = []
s = input()

i = 0
while(i < len(s)):

    if (s[i].isdigit()):
        num = '';
        while (True):
            if (i < len(s) and s[i].isdigit()):
                num = num + s[i]
                i = i + 1
            else:
                i = i - 1
                break
        queue.append(int(num))
    else:
        if (ls[s[i]] > 1):
            if (len(queue) == 0 or (len(stack) > 0 and ls[s[i]] > ls[stack[-1]])):
                stack.append(s[i])
            else:
                while (len(stack)>0 and ls[s[i]] <= ls[stack[-1]]):
                    queue.append(stack[-1])
                    stack.pop()

                stack.append(s[i])

        else:
            if (s[i] == '('):
                stack.append(s[i])
            elif (s[i] == ')'):
                while(stack[-1] != '('):
                    queue.append(stack[-1])
                    stack.pop()
                stack.pop()

    i = i + 1

while (len(stack) > 0):
    queue.append([stack[-1]])
    stack.pop()

print(queue)