import java.util.Scanner
val scanner = Scanner(System.`in`)

fun main(){
    var n = scanner.nextInt()
    var k = scanner.nextInt()
    var x = 1.shl(k)
    var m = 1.shl(n)
    var cnt = 0
    if (k == 0){
        println(m)
        return
    }
    while (x <= m) {
        cnt += 1
        x = x.shl(1)
    }
    println(cnt)
}