SimpleExpressionP3

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Scanner;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

public class SimpleExpressionP3 {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String input = scan.nextLine();
        input = input.replaceAll("\\s+", "");
        input = input.replaceAll("\\+", "+");
        input = input.replaceAll("\\-", "-");

        String []nums = input.split("\\+|\\-");
        String []operators = input.split("\\d+(\\.\\d{1,2})?|\\s+");
        double a=0;

        double sum = Double.parseDouble((nums[0]));
        for (int i = 1; i < nums.length; i++) {
            a = Double.parseDouble(nums[i]);
            if (operators[i].equals("+")) {
                sum+=a;

            }
            else {
                sum-=a;
            }

        }
        NumberFormat formatter = new DecimalFormat("###.#########");

        String f = formatter.format(sum);
        System.out.println(f);


    }

}