#include <conio.h>
#include <stdio.h>
void main()
{char s1[100],s2[100]="";
unsigned int ks1 = int(s1),ks2 = int(s2);
unsigned int l,r;
clrscr();
gets(s1);
asm{
  mov dx,0
  mov bx, ks1
  dec bx
  }
  l0:
asm{
  inc bx
  mov cx, bx
  mov ah, [bx]
  cmp ah,0
  je fin
  mov al,[bx+1]
  cmp al,0
  je fin
  }
  l1:
asm{
   mov al, [bx]
   cmp al, 32
   je l2a
   cmp al,0
   je l2a
   inc bx
   jmp l1
  }
  l2a:
asm{
   push bx
   push cx
   dec bx
   mov r,bx
   mov l,cx
   push ax
  }
  l2a1:
asm{
   mov bx,r
   mov cx,l
   mov ah,[bx]
   mov bx,cx
   mov al,[bx]
   cmp bx,cx
   jna l2a2
   cmp ah,al
   jne l2a2
   dec r
   inc l
   jmp l2a1
  }
  l2a2:
asm{
   cmp ah,al
   jne l4
   pop ax
   cmp al,0
   je fin
   pop cx
   pop bx
   jmp l0
  }
  l4:
asm{
  pop ax
  pop bx
  pop cx
  inc cx
  }
  l3:
asm{
   push bx
   mov bx, ks2
   add bx,dx
   mov [bx],ah
   inc dx
   pop bx
   inc bx
   mov ah,[bx]
   cmp bx,cx
  jne l3
  dec bx
  cmp ah,0
  jne l0
  }
  fin:
printf("%s",s2);
}