import math._

object Main {
  def main(args: Array[String]) {
    val sc = new java.util.Scanner(System.in)
    val s = sc.next

    var ans = 0
    var len = 0
    for (c <- s) {
      if (c == '…') len += 1
      else len = 0
      ans = max(ans, len)
    }
    println(ans)
  }
}