function Main(input){
    const arr = input.split('\n');
    const ABC_RGB = arr[0].split(' ').map(Number);
    const red = ABC_RGB[0];
    const green = ABC_RGB[1];
    const blue = ABC_RGB[2];
    const K = Number(arr[1]);
    let answer = 'No';
    const all = (red, green, blue, num) => {
        if(num <= 0){
            if(green>red && blue>green){
                answer = 'Yes';
                return;
            }
            return;
        }
        all(red*2, green,   blue,   num-1);
        all(red,   green*2, blue,   num-1);
        all(red,   green,   blue*2, num-1);
    }
    all(red, green, blue, K);
    console.log(answer);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));
