import Foundation

var N = readLine()!.split(separator: " ").map{Int($0)!}
let m = Int(readLine()!)!
for i in 1...m{
  if(N[0] >= N[1]){
    N[1] *= 2
  }else if(N[1] >= N[2]){
    N[2] *= 2
  }
}
if(N[0] < N[1] && N[1] < N[2]){
  print("Yes")
}else{
  print("No")
}