object Main extends App{
 
  def breakChocolate(n: Int, m: Int): Int = {
    def breaking(a: Int, b: Int, acc: Int = 0): Int = {
      if (a > 1) breaking(a - 1, b, acc + 1)
      else if (b > 1) breaking(a, b - 1, acc + n)
      else acc
    }
    breaking(n, m)
  }
 
  println(breakChocolate(5, 5))
  println(breakChocolate(7, 4))
  println(breakChocolate(4, 7))
  println(breakChocolate(1, 7))
  println(breakChocolate(0, 7))
  println(breakChocolate(0, 0))
  println(breakChocolate(-1, -10))
  println(breakChocolate(2, 2))
  println(breakChocolate(8, 5))
}
 

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