package lab3;

import java.math.*;

public class onp {
static  int top=0;
static int m2=0;

static String stos2[]=new String[20];
    public static int push (String stos[],String dana)
    {
        if(top>20)
        {
            System.out.println("Brak miejsca");
            return 0;
        }
        else
        {
            stos[top]=dana;
            top++;

            return 1;
        }
    };

    public static int pop (String stos[])
    {

        if(top==0)
        {
            System.out.println();
            return 0;
        }

        else
        {
            if(stos[top-1].equals("(")==true)
            {top--;
            }
            else
            {System.out.print(stos[top-1]);
            stos2[m2]=stos[top-1];
            m2++;
            top--;}
            return 1;
        }



    };

    public static void wynik (String stos[])
    { int s=0; double x; int m=0;
        while(stos2[s]!=null)
        {
            if(stos2[s].equals("^")==true)
            {
                //System.out.println(m);
                x=Math.pow(Double.parseDouble(stos[m-2]), Double.parseDouble(stos[m-1]));
                stos[m-2]=Double.toString(x);
                m--;
            }
            else
            {
                if(stos2[s].equals("x")==true)
                {
                    x=Double.parseDouble(stos[m-1])*Double.parseDouble(stos[m-2]);
                    stos[m-2]=Double.toString(x);
                    m--;

                }
                else
                {
                    if(stos2[s].equals("/")==true)
                    {
                        x=Double.parseDouble(stos[m-2])/Double.parseDouble(stos[m-1]);
                        stos[m-2]=Double.toString(x);
                        m--;
                    }
                    else
                    {
                        if(stos2[s].equals("+")==true)
                        {
                            x=Double.parseDouble(stos[m-2])+Double.parseDouble(stos[m-1]);
                            stos[m-2]=Double.toString(x);
                            m--;
                        }
                        else
                        {
                            if(stos2[s].equals("-")==true)
                            {
                                x=Double.parseDouble(stos[m-2])-Double.parseDouble(stos[m-1]);
                                stos[m-2]=Double.toString(x);
                                m--;
                            }
                            else
                            { //System.out.println(m);
                                stos[m]=stos2[s];

                                m++;
                            }
                        }
                    }
                }
            }


            s++;
        }
        System.out.println(stos[0]);
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        int n = 0;
        int i;
        String Stos[]=new String[20];
        while(n < args.length) {
            String rownanie = args[n];
            i=0;
        while(rownanie.charAt(i) != '=') {

            if(rownanie.charAt(i) == '(')
            {
                push(Stos,"(");
            }
            else
                {
                if(rownanie.charAt(i) == ')')
                        {
                        while(Stos[top-1].equals("(")==false)
                        {
                            pop(Stos);
                        }
                            top--;
                        }
                else
                {
                    if(rownanie.charAt(i) == 'x' || rownanie.charAt(i) == '/')
                    {
                        while(top!=0 &&(Stos[top-1].equals("x")==true || Stos[top-1].equals("/")==true || Stos[top-1].equals("^")==true))
                        {
                            pop(Stos);

                        }

                            push(Stos,String.valueOf(rownanie.charAt(i)));

                    }
                    else
                    {
                        if(rownanie.charAt(i) == '+' || rownanie.charAt(i) == '=')
                        {
                            while(top!=0 && (Stos[top-1].equals("x")==true || Stos[top-1].equals("/")==true || Stos[top-1].equals("+")==true || Stos[top-1].equals("-")==true||Stos[top-1].equals("^")==true))
                                {
                                pop(Stos);

                                }
                            push(Stos,String.valueOf(rownanie.charAt(i)));
                        }
                        else
                        {
                            if(rownanie.charAt(i) == '^')
                            {
                                while(top!=0 && Stos[top-1].equals("^")==true)
                                {
                                    pop(Stos);
                                }
                                push(Stos,String.valueOf(rownanie.charAt(i)));
                            }
                            else
                            {
                            System.out.print(rownanie.charAt(i));
                            stos2[m2]=String.valueOf(rownanie.charAt(i));
                            m2++;
                            }
                        }
                    }
                }
                }

            i++;

        }
        n++;
        while(pop(Stos)==1)
        {

        }
        int q=0;
        while(q<15)
        {
            //System.out.print(stos2[q]);
            q++;
        }
        wynik(Stos);
            }

        }
}