#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct node{
    char n[500];
    struct node *next;
};


struct node* push(struct node * head,char val[])
{
    struct node* temp=(struct node*)malloc(sizeof(struct node));
    strcpy(temp->n,val);
    if(head==NULL)
    {
        temp->next=NULL;
        return temp;
    }

    temp->next=head;
    return temp;
}


int operator(char ch[])
{
    if (*ch=='+' || *ch=='-' || *ch=='/' || *ch=='*')
    {
        return 1;
    }
    else if ( *ch=='^')
    {
        return 2;
    }
    else
    {
        return 0;
    }
}
float conversion(float a,float b,char operator){
    if(operator=='^')
    {
        float value=a*b;
        return value;
    }
    else if(operator=='*')
    {
        float value=a*b;
        return value;
    }

    else if(operator=='-')
    {
        float value=a-b;
        return value;
    }
    else if(operator=='/')
    {
        float value=a/b;
        return value;
    }
    else if(operator=='+')
    {
        float value=a+b;
        return value;
    }
}
int main()
{
    struct node *exp=NULL;
    struct node *head;
    head=NULL;

    char Postfix[200];
    scanf("%s",Postfix);

    int length=strlen(Postfix);
    int i=0;
    int j=0;
    char str[200];
    int a=0;
    float b=0;

    while(Postfix[i]!='\0')
    {

        if(Postfix[i]!=','  )
        {

            str[j]=Postfix[i];
            j++;

        }
        if(Postfix[i]==',' || i==length-1)
        {
            str[j]='\0';
            j=0;


            if(operator(str)==0)
            {

                head=push(head,str);

            }
            else if (operator(str)==1)
            {
                if(head!=NULL )
                {

                    char val1[500];strcpy(val1,head->n);
                    char val2[500];strcpy(val2,head->next->n);
                    char x[500]="(";
                    char y[500]=")";

                    strcat(strcat(strcat(strcat(x,val2),str),val1),y);
                    struct node* tempu=head->next->next;
                    exp=push(exp,x);
                    head=exp;
                    head->next=tempu;

                }
                else{
                    printf("error");
                    return 0;
                }

            }
            else if (operator(str)==2)
            {
                a = atoi(str);
                printf("%d",a);
                b=conversion(a,a,'^');
                if(head!=NULL )
                {

                    char val1[500];strcpy(val1,head->n);

                    char x[500]="(";
                    char y[500]=")";

                    strcat(strcat(strcat(x,val1),str),y);

                    exp=push(exp,x);
                    head=exp;


                }
                else
                {
                    printf("error");
                    return 0;
                }

            }
        }
        i++;
    }
    struct node *t=exp;
    while(t!=NULL)
    {
        printf("%s",t->n);
        t=t->next;
    }
    printf("%f",b);


    return 0;


}