Sanalista

length = int(input())

words = []
for i in range(length):
    words.append(input())

result = 0
for i in range(length):
    letters = {}
    for letter in words[i]:
        if not letter in letters:
            letters[letter] = 1
        else:
            letters[letter] += 1
    tempresult = 1
    for letter in letters:
        if letters[letter] % 2 == 1:
            tempresult = 0
    result += tempresult

print(result)

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED