def decompose_all(S,l=0):
  # (str,int)->hydra,int
  # 次に見るところを返す
  ret=[]
  while l<len(S) and S[l]=="(":
    h,l=decompose_all(S,l+1)
    ret.append(h)
  return ret,l+1

def get_righttop(arr):
  # hydra -> hydra
  logright=arr[-1]
  if logright==[]: return [[]]
  logrightlogright=logright[-1]
  if logrightlogright==[]: return arr[-1:]
  return get_righttop(logright)

def process(arr):
  # hydra -> hydra
  logright=arr.pop()
  if logright==[]: return arr
  logrightlogright=logright[-1]
  if logrightlogright==[]:
    logright.pop()
    arr.append(logright)
    return arr
  arr.append(process(logright))
  return arr

def g(arr):
  # hydra -> int
  if arr==[]: return 0
  righttop=get_righttop(arr)
  if righttop==[[]]: return 1 if g(process(arr))==0 else 0
  if righttop==[[[]]]: return 100
  return 1 if g(process(righttop))==0 else 0

import sys
sys.setrecursionlimit(10**9)

S=input()
print(0 if g(decompose_all(S)[0]) else 1)