import Foundation

func main() {
 let inputString = readLine()!
 let split: [Int] = inputString.components(separatedBy: " ").map{Int(String($0))!}
 let a = split[0]
 var b = split[1]
 var c = split[2]
 let k = Int(readLine()!)!
 
 for _ in 1...k+1 {
     if (a < b && b < c) {
         print("Yes")
         return
     } else if(a < b) {
         c = c * 2
     } else {
         b = b * 2
     }
 }
 print("No")
}

main()