function main(arg) {
    let [a,b,c] = arg.split("\n")[0].split(" ").map(Number)
    let k = Number(arg.split("\n")[1])
    
    
    b_ = b
    c_ = c
    for(let i=0; i<k; i++) {
        if(b <= a){
            b=b*2;
        } else {
            c=c*2;
        }
    }
    console.log((b>a && c>b) ? 'Yes' : 'No')
    
}

main(require("fs").readFileSync("/dev/stdin", "utf8"));