object Main {

  def compute_min_sum(a0: Int, b0: Int, limit: Int = 500): Int = {
    var answer = Int.MaxValue
    for (a <- 0 to limit; b <- 0 to limit; if a != 0 || b != 0) {
      val s = a + b
      val aCondition = a0 == scala.math.round(100 * a.toDouble / s)
      val bCondition = b0 == scala.math.round(100 * b.toDouble / s)
      if (aCondition && bCondition) {
        answer = scala.math.min(answer, s)
      }
    }
    return answer
  }

  def main(args: Array[String]) {
    val scanner = new java.util.Scanner(System.in)
    val a0 = scanner.nextInt
    val b0 = scanner.nextInt
    println(compute_min_sum(a0, b0))
  }
}