function Main(input) {
	var a = parseInt(input.split(" ")[0], 10);
	var b = parseInt(input.split(" ")[1], 10);
	var c = parseInt(input.split(" ")[2], 10);

	console.log((a === b && b === c) ? 'Yes' : 'No');
}

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