class Solution:
    def simplifyPath(self, path: str) -> str:
        stack = []
        cur = ""

        for c in path + "/":
            if c == "/":
                if cur == "..":
                    if stack:
                        stack.pop()
                elif cur != "" and cur != ".":
                    stack.append(cur)
                cur = ""
            else:
                cur += c

        return "/" + "/".join(stack)

class Solution:
    def simplifyPath(self, path: str) -> str:
        stack = []
        paths = path.split("/")

        for cur in paths:
            if cur == "..":
                if stack:
                    stack.pop()
            elif cur != "" and cur != ".":
                stack.append(cur)

        return "/" + "/".join(stack)