Sanalista

result_counter = 0

for i in range(int(input())):
    text = input()
    odd_chars = []
    for char in text:
        if char in odd_chars:
            odd_chars.remove(char)
        else:
            odd_chars.append(char)
    if len(odd_chars) == 0:
        result_counter += 1
print(result_counter)

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED