function Main(input) {
	// the first line is assigned to input[0], the second line is assigned to input[1] similarly.
	var s = input.replace(/([\*\+])/g, ')$1');
	s = s.replace(/[^\)]/g, '').replace(/\)/g, '(') + s;
	s = s.replace(/\+/g, 'a').replace(/\*/g, '+').replace(/a/g, '*');
	console.log('%d', eval(s));
}
// Don't edit this line!
Main(require("fs").readFileSync("/dev/stdin", "utf8"));