#include < stdio.h >  
#include < stdlib.h >

#define  DEBUG

struct  Node;
typedef  struct  Node  * ptr;
typedef ptr Stack;

 struct  Node
 {
   char cha;
   ptr next;
       } ;
      
Stack CreatStack();
 void  Push( char ,Stack);
 void  Pop(Stack);
 char  Top(Stack);
 int  IsEmpty(Stack);
 void  MakeEmpty(Stack);
      
 int  main()
 {
    char cha;
    Stack s=CreatStack();
    while(scanf("%c",&cha)!=EOF)
    {
       if(cha=='\n')
       {
          while(!IsEmpty(s))
          {printf("%c",Top(s)); Pop(s);}   
          continue;
       }  // 清栈
       else
       {
          if(cha!='+'&&cha!='*'&&cha!='-'&&cha!='/'&&cha!='('&&cha!=')')
             printf("%c",cha);
          else
          {
             if(cha=='(')
                Push(cha,s);
             else
                 if(cha==')')
                 {
                    while(Top(s)!='(')
                    {printf("%c",Top(s)); Pop(s);}
                    Pop(s);
                 }
                 else
                    if(cha=='*'||cha=='/')
                    {
                      while(!IsEmpty(s)&&Top(s)!='+'&&Top(s)!='-'&&Top(s)!='(')
                      {printf("%c",Top(s)); Pop(s);}
                      Push(cha,s);
                    }
                    else
                    {
                       while(!IsEmpty(s)&&Top(s)!='(')
                       {printf("%c",Top(s)); Pop(s);}
                       Push(cha,s);
                    }
          }
       }
    }
    system("pause");
    return 0;
}