fun main(){
    var (n,m) = readLine()!!.split(" ").map { it.toInt() }
    var b = true
    var v = 0
    while (v < n){
        if(v%2==0){
            var x = 0
            while (x<m){
                print("#")
                x++
            }
        }
        else{
            if(b){
                var j = 1
                while (j<m){
                    print("*")
                    j++
                }
                print("#")
                b = false
            }
            else{
                print("#")
                var j = 1
                while (j<m){
                    print("*")
                    j++
                }
                b = true

            }

        }
        println()
        v++
    }

}