import java.util.*
import java.util.ArrayDeque

fun main(args: Array<String>) {
    val sc = java.util.Scanner(System.`in`)
    var h = sc.nextInt()
    val a = sc.nextInt()

    var r = 0
    while (h > 0) {
        h -= a
        r++
    }
   print(r)
}
