Sanalista

words = [input() for _ in range(int(input()))]
ans = 0
for i in words:
    while 1:
        if i.count(i[0]) % 2 == 0:
            i = i.replace(i[0],"")
            if i == "":
                ans += 1
                break
        else:
            break
print(ans)

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED