func readInts() -> [Int] {
    return readLine()!.split(separator: " ").map { Int($0)! }
}

func main() {
    let ha = readInts()
    let h = ha[0]
    let a = ha[1]
    
    if h % a == 0 {
        print(h / a)
    } else {
        print(h / a + 1)
    }
}

main()
