package main
import "fmt"

func main() {
    s := "あ"
    fmt.Scan(&s)
    rs := []rune(s)
    suc, ans := 0, 0
    for i := 0; i < len(rs); i++ {
        if string(rs[i]) == "…" {
            suc++
            if suc > ans {
                ans = suc
            }
        } else {
            suc = 0
        }
    }
    fmt.Println(ans)
}