package Yukicoder

/**
 * Created by hichikawa on 2015/11/02.
 */
fun main(args: Array<String>) {
    fun readLineLongArray() : List<Long> {
        val str = readLine() as String
        val arrStr = str.split(" ")
        val ret = arrStr.map { it.toLong() }
        return ret
    }
    fun readLineLong() : Long {
        val str = readLine() as String
        return str.toLong()
    }
    val arrInt = readLineLongArray()
    val lenlen = arrInt[0] * arrInt[0] + arrInt[1] * arrInt[1]
    for (i in 1..(Integer.MAX_VALUE)) {
        if (lenlen < (i / 2.0) * (i / 2.0)) {
            println(i)
            break
        }
    }
}