Sanalista

amt = int(input())
words = []
result = 0
 
for i in range(amt):
	words.append(input())
 
for word in words:
        valid = True
        letters = [letter for letter in sorted(word)]
        for letter in "abcdefghijklmnopqrstuvwxyz":
                if letters.count(letter)%2 != 0:
                        valid = False
        if valid:
                result += 1
                
print(result)

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED