def simplifyPath(self, A):
s = A.split("/")
res = "/"
stk = []
for i in range(len(s)):
if s[i] != "" and s[i].isalpha() == True:
stk.append(s[i])
elif s[i] != "" and len(stk) != 0 and s[i] == "..":
stk.pop()
if len(stk) != 0:
for i in range(len(stk)):
res += stk[i]+"/"
else:
res = "/"
if len(res)>1:
res = res.rstrip("/")
return res
return res