#include <stdio.h>
#include <stdlib.h>
#include<strings.h>
struct Node
{
 char data;
 struct Node *next;
}*top=NULL;
void push(char x)
{
 struct Node *t;
 t=(struct Node*)malloc(sizeof(struct Node));

 if(t==NULL)
 printf("stack is full\n");
 else
 {
 t->data=x;
 t->next=top;
 top=t;
 }

}
char pop()
{
 struct Node *t;
 char x=-1;

 if(top==NULL)
 printf("Stack is Empty\n");
 else
 {
 t=top;
 top=top->next;
 x=t->data;
 free(t);
 }
 return x;
}
int pre(char x)
{
      if(x=='+' || x=='-')
          return 1;
      else if(x=='*' || x=='/')
         return 2;
      else if(x=='^')
          return 3;
    return 0;
}
int isOperand(char x)
{
 if(x=='+' || x=='-' || x=='*' || x=='/'||x=='^'||x==')')
    return 0;
 else
    return 1;

}
char *intopost(char infix[])
{
    int i=0,j=0;
   // push('(');
   // strcat(infix,')');
    char *postfix;
    int len=strlen(infix);
    postfix=(char*)malloc((len+2)*sizeof(char));
    while(infix[i]!='\0')
    {
           if(infix[i]=='(')
              push(infix[i++]);
           else if(isOperand(infix[i]))
              postfix[j++]=infix[i++];
            else if(infix[i]==')')
            {
                char x=pop();
                while(x!='(')
                {
                    postfix[j++]=x;
                    x=pop();
                }
                i++;
            }
            else
            {
                if(top==NULL)
                    push(infix[i++]);
                else if(pre(infix[i])>pre(top->data))
                     push(infix[i++]);
                else
                   postfix[j++]=pop();


            }
        }
            while(top!=NULL)
               postfix[j++]=pop();
      postfix[j]='\0';
      return postfix;

}
int main()
{
    int n;
    scanf("%d",&n);
    char infix[n];
    for(int i=0;i<n;i++)
       scanf("%c",&infix[i]);

     int i=0,j=n-1;
     while(i<j)
     {
         char temp=infix[i];
         infix[i]=infix[j];
         infix[j]=temp;
     }


    //printf("%s",infix);

   char *postfix=intopost(infix);
    i=0,j=n-1;
    while(i<j)
     {
         char temp=postfix[i];
         postfix[i]=postfix[j];
         postfix[j]=temp;
     }
      for(int i=0;i<n;i++)
       scanf("%c",postfix[i]);

  // printf("%s ",postfix);
      return 0;
}