EvaluateEditorial

import java.math.BigInteger;
import java.util.Scanner;

public class Main {
    static BigInteger solve(String expression) {
        BigInteger number = BigInteger.ZERO;
        int i = 0;
        while (i < expression.length() && Character.isDigit(expression.charAt(i))) {
            number = number.multiply(BigInteger.valueOf(10));
            number = number.add(BigInteger.valueOf(expression.charAt(i) - '0'));
            i += 1;
        }

        char op = expression.charAt(i);
        ++i;
        BigInteger other;

        if (expression.charAt(i) != '(') {
            other = new BigInteger(expression.substring(i));
        } else {
            other = solve(expression.substring(i + 1, expression.length() - 1));
        }

        BigInteger result = number;
        if (op == '+') {
            result = result.add(other);
        } else if (op == '-') {
            result = result.subtract(other);
        } else if (op == '*') {
            result = result.multiply(other);
        }

        // System.out.println(expression);
        // System.out.printf("%s %c %s = %s%n", number, op, other, result);
        return result;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
//        String expression = "55*(10-(2+(4-12)))";
        String expression = in.nextLine();
        System.out.println(solve(expression));

    }
}