import java.util.Scanner;


public class Evaluate {
	private Stack number;
	private Stack operator;

	Scanner scan = new Scanner(System.in);
	public Evaluate()
	{number = new Stack(); operator = new Stack();}


	public void menu()
	{
		System.out.println("Enter an expression to evaluate :");


		String to_evaluate = scan.next();
		String numbr = "";
		for(int i =0; i<to_evaluate.length(); i++)
		{
			String toAdd = "";




			if((to_evaluate.charAt(i) == '*') || (to_evaluate.charAt(i) == '+') || (to_evaluate.charAt(i) == '/') || (to_evaluate.charAt(i)=='-')){
				operator.push("" + to_evaluate.charAt(i));

				String a =  number.pop();
				String b =  number.pop();

				String sign = operator.pop();

				numbr = "("+b+sign+a+")";

				number.push(numbr);

			}else{number.push(""+to_evaluate.charAt(i));}

		}

		System.out.println(numbr);

	}


	public static void main (String[] args){
		Evaluate n = new Evaluate();
		n.menu();
	}



}