input len while if and break elif and break else print for in range if

a = input()
k = 0
h = 0
l = len(a)
i = 1
while 0 < i < l:
    if a[i - 1] != a[l - i] and a[i - 1] == a[l - i - 1]:
        k = l - i + 1
        a = a[:(l - i)] + a[(l - i + 1):]
        l -= 1
        break
    elif a[i - 1] != a[l - i] and a[l - i - 1] == a[i - 1]:
        k = i
        a = a[:i - 4] + a[i - 3:]
        l -= 1
        break
    else:
        i += 1
print(a)
for i in range(l):
    if a[i] != a[l - i - 1]:
        h = 1
if h == 1:
    print(0)
else:
    print(k)