    function Main(input) {
     
    	input = input.split("\n");
    	tmp = input[0].split(" ");
     
    	var rd = tmp[0];
    	var gr = tmp[1];
    	var bl = tmp[2];
    	var k = input[1];
      
      	var result = false;
     
    	for (var i = 0; i < k; i++){ 
          	if (gr < rd || gr == rd) {
            	gr = gr * 2;
            } else if (bl < gr || bl == gr) {
            	bl = bl * 2;
            } 
        }
        if (gr > rd && bl > gr){
            result = true;
        }
      
      	if (result) console.log('Yes');
      	else console.log('No');
    }
    Main(require("fs").readFileSync("/dev/stdin", "utf8"));