# Here your code !
s = gets.chomp
n = s.size

dp = (n+1).times.map { Array.new(n+1) }
dp[0][0] = [""]
(1..n).each do |i|
    (0..i).each do |j|
        k = i - j
        a = []
        a.concat(dp[j][k-1].map{|v| v + s[n - k] }) if k > 0
        a.concat(dp[j-1][k].map{|v| v + s[j - 1] }) if j > 0
        a.uniq!
        dp[j][k] ||= a
    end
end
r = []
(0..n).each do |i|
        r << dp[i][n-i]
end
puts r.flatten.uniq.size