import scala.io.Source.{fromFile, stdin}
 
object Main {
  def main(args: Array[String]) {
    val input = if (args.length >= 1) fromFile(args(0)) else stdin
    input.getLines.filterNot(_.isEmpty).map(beauty).foreach(println)
  }
 
  def isAlpha(c: Char) = (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
 
  def desc[T: Ordering] = implicitly[Ordering[T]].reverse
 
  def beauty(s: String) = s // "abcC!"
    .filter(isAlpha)        // "abcC"
    .toLowerCase            // "abcc"
    .groupBy(identity)      // [a -> a, b -> b, c -> cc]
    .mapValues(_.size)      // [a -> 1, b -> 1, c -> 2]
    .values.toList          // [1, 1, 2]
    .sortBy(identity)(desc) // [2, 1, 1]
    .zip(26 to 1 by -1)     // [(2, 26), (1, 25), (1, 24)]
    .map(x => x._1 * x._2)  // [52, 25, 24]
    .sum                    // 101
}
 

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ABbCcc
Good luck in the Facebook Hacker Cup this year!
Ignore punctuation, please :)
Sometimes test cases are hard to make up.
So I just go consult Professor Dalves