Palindromi

word = input()
list_word=list(word)
counter=0
for x in list_word:
    if x==list_word[(len(list_word)-1)-list_word.index(x)]:
        continue
    else:
        counter+=1
        list_word[(len(list_word)-1)-list_word.index(x)]=x
if len(list_word)%2==0:
    counter+=1
print(counter)

Test 1 (public)

Verdict: ACCEPTED

Test 2 (public)

Verdict: ACCEPTED

Test 3 (public)

Verdict: ACCEPTED

Test 4 (public)

Verdict: WRONG ANSWER

Test 5 (public)

Verdict: ACCEPTED

Test 6 (public)

Verdict: ACCEPTED

Test 7 (public)

Verdict: ACCEPTED

Test 8 (public)

Verdict: WRONG ANSWER

Test 9 (public)

Verdict: WRONG ANSWER

Test 10 (public)

Verdict: WRONG ANSWER