Palindromi

s = input("")
s1 = list(s[:len(s)//2])
s2 = list(s[len(s)//2 + len(s)%2:])

n = 0

for i in range(len(s1)):
    if s1[-i-1] != s2[i]:
        n += 1

print(n)

Test 1 (public)

Verdict: ACCEPTED

Test 2 (public)

Verdict: ACCEPTED

Test 3 (public)

Verdict: ACCEPTED

Test 4 (public)

Verdict: ACCEPTED

Test 5 (public)

Verdict: ACCEPTED

Test 6 (public)

Verdict: ACCEPTED

Test 7 (public)

Verdict: ACCEPTED

Test 8 (public)

Verdict: ACCEPTED

Test 9 (public)

Verdict: ACCEPTED

Test 10 (public)

Verdict: ACCEPTED