Palindromi

x = list(input())
i = 0
l = len(x) - 1
while True:
	if x == list(reversed(x)):
		print(i)
		break
	elif x[i] != x[l-i]:
		x[i] = x[l-i]
		i += 1

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: TIME LIMIT EXCEEDED

Test 8 (public)

Verdict: TIME LIMIT EXCEEDED

Test 9 (public)

Verdict: TIME LIMIT EXCEEDED

Test 10 (public)

Verdict: TIME LIMIT EXCEEDED