Sanalista

def word_check(word):
    chars = {}
    for c in word:
        try:
            chars[c]+=1
        except KeyError:
            chars[c] = 1
    return chars == {k:v for k,v in chars.items() if v % 2 == 0}


n = int(input());
words = []
for i in range(n):
    words += [input()]
print(len(list(filter(word_check, words))))

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED