import Foundation

let inputs = readLine()!.components(separatedBy: " ").map{ Int($0)! }
let N = inputs[0]
let M = inputs[1]
let Aarray = readLine()!.components(separatedBy: " ").map{ Int($0)! }

var voteNumber = 0
var popularProdact = 0

for i in 0...N - 1 {
    voteNumber += Aarray[i]
}

for i in 0...N - 1 {
    if Aarray[i] < voteNumber / 4 / M {
        
    }else{
        popularProdact += 1
    }
}

if popularProdact >= M {
    print("Yes")
}else{
    print("No")
}