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19 lines
440 B
Scala
19 lines
440 B
Scala
import scala.io.StdIn._
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val res = Iterator
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.continually(readLine)
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.takeWhile(_ != null)
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.toList
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.map {
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entry => val counts = entry
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.groupBy(_.charValue)
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.mapValues(_.length)
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.values
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(counts.find(_ == 2), counts.find(_ == 3))
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}
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.foldLeft((0, 0)) {
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(acc, item) => (acc._1 + item._1.map(_ => 1).getOrElse(0),
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acc._2 + item._2.map(_ => 1).getOrElse(0)) }
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println(res._1 * res._2)
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