test.py

stdin=["44+44=88","4+6=10","6-2=4","2-6=?","6-3=2"]
total=0
for line in stdin:
    data=list(line)
    if('?' in data):
      total+=0
    elif('+' in data):
      a=''.join(data[0:data.index('+')])
      b=''.join(data[data.index('+')+1:data.index('=')])
      d=int(a)+int(b)
      data1=data[::-1]
      c=data1[0:data1.index('=')]
      e=''.join(c[::-1])
      if d==int(e):
        total+=1
    elif('-' in data):
      a=''.join(data[0:data.index('-')])
      b=''.join(data[data.index('-')+1:data.index('=')])
      d=int(a)-int(b)
      data1=data[::-1]
      c=data1[0:data1.index('=')]
      e=''.join(c[::-1])
      if d==int(e):
        total+=1
    elif('@@@' in data):
      total+=0
print total