const input = require("fs").readFileSync("/dev/stdin", "utf8")

;(input => {

    const lines = input.split('\n')
    let [A, B, C] = lines[0].split(' ').map(Number)
    const K = lines[1] - 0

    let c = 0
    while (A >= B) {
        B *= 2
        c++
    }
    while (B >= C) {
        C *= 2
        c++
    }

    console.log(K >= c ? 'Yes' : 'No')

})(input)
