cstutoringcenter.com_Silly Strings

import re
from collections import Counter
sum = 0
for file in open('strings.txt'):
    c = Counter()
    strs = file.strip()
    for y in strs:c[y] += 1
    numberofvowels = c['a'] + c['e'] + c['i'] + c['o'] + c['u']
    numberofdigits = c['0'] + c['1'] + c['2'] + c['3'] + c['4'] + c['5'] + c['6'] + c['7'] + c['8'] + c['9']
    if(numberofvowels) % 2 != 0:continue
    if(numberofdigits < 3):continue
    if 'b' in strs or 'q' in strs:continue
    flag = 0
    for x in strs:
        if re.findall('[^0-9a-zA-Z]', x) != []:flag+=1
    if flag > 3:continue
    sum += 1
print sum