const main = (str) => {
	const [a, b] = str.split(' ').map(v => +v.trim());
	
	if (a > 2 * b) {
		return 'No';
	}
	
	if (b > 2 * a) {
		return 'No';
	}
	
	return 'Yes'
};

console.log(main(require('fs').readFileSync('/dev/stdin', 'utf8')))