Given the following C code and unoptimized assembly code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
/* ex 9_1
   hangan2020 */

#include <stdio.h>
#include <stdlib.h>
#define SIZE 11

//Stack structure
typedef struct stack{
   int size;
   int count;
   char data[SIZE];
   char *top;
} stack;

//Initialize stack array
void initialize_stack(stack *stk){
   stk->count = 0;
   stk->size = SIZE;
   stk->top = &(stk->data[SIZE]);
}

//Push function
void push(stack *stk, char elem){
   if(stk->count >= stk->size){
      fprintf(stderr, "Error: Stack overflow\n");
      exit(1);
   }
   else{
      stk->top--;
      *(stk->top) = elem;
      stk->count++;
   }
}

//Pop function
void pop(stack *stk){
   if(stk->count <= 0){
      fprintf(stderr, "Error: Stack underflow\n");
      exit(1);
   }
   else{
      stk->top++;
      stk->count--;
   }
}

// Function to print stack
void print_stk(stack *stk){
   char *p;
   p = stk->top;
   for(int i = stk->count; i > 0; i--){
      printf("%c", p[i-1]);
   }
   printf("\n");
}

int main(void){
   stack stk;
   char string[SIZE];
   int i = 0;

   initialize_stack(&stk);
   scanf("%s", &string);
   
   // Traverse from the right
   while(string[i] != '\0'){
      //If meet B and the string is not empty, delete the prev element
      if(string[i] == 'B'){
         if(stk.count != 0){
            pop(&stk);
         }
      }else{ //Otherwise push
         push(&stk, string[i]);
      }
      i++;
   }

   print_stk(&stk);

   return 0;

}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.globl	initialize_stack
	.type	initialize_stack, @function
initialize_stack:
.LFB6:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movq	%rdi, -8(%rbp)
	movq	-8(%rbp), %rax
	movl	$0, 4(%rax)
	movq	-8(%rbp), %rax
	movl	$11, (%rax)
	movq	-8(%rbp), %rax
	leaq	19(%rax), %rdx
	movq	-8(%rbp), %rax
	movq	%rdx, 24(%rax)
	nop
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE6:
	.size	initialize_stack, .-initialize_stack
	.section	.rodata
.LC0:
	.string	"Error: Stack overflow\n"
	.text
	.globl	push
	.type	push, @function
push:
.LFB7:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movq	%rdi, -8(%rbp)
	movl	%esi, %eax
	movb	%al, -12(%rbp)
	movq	-8(%rbp), %rax
	movl	4(%rax), %edx
	movq	-8(%rbp), %rax
	movl	(%rax), %eax
	cmpl	%eax, %edx
	jl	.L3
	movq	stderr(%rip), %rax
	movq	%rax, %rcx
	movl	$22, %edx
	movl	$1, %esi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
.L3:
	movq	-8(%rbp), %rax
	movq	24(%rax), %rax
	leaq	-1(%rax), %rdx
	movq	-8(%rbp), %rax
	movq	%rdx, 24(%rax)
	movq	-8(%rbp), %rax
	movq	24(%rax), %rax
	movzbl	-12(%rbp), %edx
	movb	%dl, (%rax)
	movq	-8(%rbp), %rax
	movl	4(%rax), %eax
	leal	1(%rax), %edx
	movq	-8(%rbp), %rax
	movl	%edx, 4(%rax)
	nop
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE7:
	.size	push, .-push
	.section	.rodata
.LC1:
	.string	"Error: Stack underflow\n"
	.text
	.globl	pop
	.type	pop, @function
pop:
.LFB8:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movq	%rdi, -8(%rbp)
	movq	-8(%rbp), %rax
	movl	4(%rax), %eax
	testl	%eax, %eax
	jg	.L5
	movq	stderr(%rip), %rax
	movq	%rax, %rcx
	movl	$23, %edx
	movl	$1, %esi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
.L5:
	movq	-8(%rbp), %rax
	movq	24(%rax), %rax
	leaq	1(%rax), %rdx
	movq	-8(%rbp), %rax
	movq	%rdx, 24(%rax)
	movq	-8(%rbp), %rax
	movl	4(%rax), %eax
	leal	-1(%rax), %edx
	movq	-8(%rbp), %rax
	movl	%edx, 4(%rax)
	nop
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE8:
	.size	pop, .-pop
	.globl	print_stk
	.type	print_stk, @function
print_stk:
.LFB9:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$32, %rsp
	movq	%rdi, -24(%rbp)
	movq	-24(%rbp), %rax
	movq	24(%rax), %rax
	movq	%rax, -8(%rbp)
	movq	-24(%rbp), %rax
	movl	4(%rax), %eax
	movl	%eax, -12(%rbp)
	jmp	.L7
.L8:
	movl	-12(%rbp), %eax
	cltq
	leaq	-1(%rax), %rdx
	movq	-8(%rbp), %rax
	addq	%rdx, %rax
	movzbl	(%rax), %eax
	movsbl	%al, %eax
	movl	%eax, %edi
	call	putchar@PLT
	subl	$1, -12(%rbp)
.L7:
	cmpl	$0, -12(%rbp)
	jg	.L8
	movl	$10, %edi
	call	putchar@PLT
	nop
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE9:
	.size	print_stk, .-print_stk
	.section	.rodata
.LC2:
	.string	"%s"
	.text
	.globl	main
	.type	main, @function
main:
.LFB10:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$80, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$0, -68(%rbp)
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	initialize_stack
	leaq	-19(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC2(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	jmp	.L10
.L13:
	movl	-68(%rbp), %eax
	cltq
	movzbl	-19(%rbp,%rax), %eax
	cmpb	$66, %al
	jne	.L11
	movl	-60(%rbp), %eax
	testl	%eax, %eax
	je	.L12
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	pop
	jmp	.L12
.L11:
	movl	-68(%rbp), %eax
	cltq
	movzbl	-19(%rbp,%rax), %eax
	movsbl	%al, %edx
	leaq	-64(%rbp), %rax
	movl	%edx, %esi
	movq	%rax, %rdi
	call	push
.L12:
	addl	$1, -68(%rbp)
.L10:
	movl	-68(%rbp), %eax
	cltq
	movzbl	-19(%rbp,%rax), %eax
	testb	%al, %al
	jne	.L13
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	print_stk
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L15
	call	__stack_chk_fail@PLT
.L15:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE10:
	.size	main, .-main
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:
```

Only output the optimized assembly code. Do not include any other text. Do not write any comments in the assembly code. Wrap the assembly code in ```assembly``` tags.
user
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"Error: Stack overflow\n"
	.text
	.p2align 4
	.type	push.part.0, @function
push.part.0:
.LFB44:
	.cfi_startproc
	pushq	%rax
	.cfi_def_cfa_offset 16
	popq	%rax
	.cfi_def_cfa_offset 8
	leaq	.LC0(%rip), %rdi
	movl	$22, %edx
	movl	$1, %esi
	subq	$8, %rsp
	.cfi_def_cfa_offset 16
	movq	stderr(%rip), %rcx
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
	.cfi_endproc
.LFE44:
	.size	push.part.0, .-push.part.0
	.section	.rodata.str1.1
.LC1:
	.string	"Error: Stack underflow\n"
	.text
	.p2align 4
	.type	pop.part.0, @function
pop.part.0:
.LFB45:
	.cfi_startproc
	pushq	%rax
	.cfi_def_cfa_offset 16
	popq	%rax
	.cfi_def_cfa_offset 8
	leaq	.LC1(%rip), %rdi
	movl	$23, %edx
	movl	$1, %esi
	subq	$8, %rsp
	.cfi_def_cfa_offset 16
	movq	stderr(%rip), %rcx
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
	.cfi_endproc
.LFE45:
	.size	pop.part.0, .-pop.part.0
	.p2align 4
	.globl	initialize_stack
	.type	initialize_stack, @function
initialize_stack:
.LFB39:
	.cfi_startproc
	endbr64
	movq	.LC2(%rip), %rax
	movq	%rax, (%rdi)
	leaq	19(%rdi), %rax
	movq	%rax, 24(%rdi)
	ret
	.cfi_endproc
.LFE39:
	.size	initialize_stack, .-initialize_stack
	.p2align 4
	.globl	push
	.type	push, @function
push:
.LFB40:
	.cfi_startproc
	endbr64
	movl	(%rdi), %eax
	cmpl	%eax, 4(%rdi)
	jge	.L12
	movq	24(%rdi), %rax
	leaq	-1(%rax), %rdx
	movq	%rdx, 24(%rdi)
	movb	%sil, -1(%rax)
	addl	$1, 4(%rdi)
	ret
.L12:
	pushq	%rax
	.cfi_def_cfa_offset 16
	call	push.part.0
	.cfi_endproc
.LFE40:
	.size	push, .-push
	.p2align 4
	.globl	pop
	.type	pop, @function
pop:
.LFB41:
	.cfi_startproc
	endbr64
	movl	4(%rdi), %eax
	testl	%eax, %eax
	jle	.L18
	subl	$1, %eax
	addq	$1, 24(%rdi)
	movl	%eax, 4(%rdi)
	ret
.L18:
	pushq	%rax
	.cfi_def_cfa_offset 16
	call	pop.part.0
	.cfi_endproc
.LFE41:
	.size	pop, .-pop
	.p2align 4
	.globl	print_stk
	.type	print_stk, @function
print_stk:
.LFB42:
	.cfi_startproc
	endbr64
	movl	4(%rdi), %eax
	movq	24(%rdi), %rdx
	testl	%eax, %eax
	jle	.L24
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movslq	%eax, %rcx
	subl	$1, %eax
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	leaq	-2(%rdx,%rcx), %rbp
	leaq	-1(%rdx,%rcx), %rbx
	subq	%rax, %rbp
	subq	$8, %rsp
	.cfi_def_cfa_offset 32
	.p2align 4,,10
	.p2align 3
.L21:
	movsbl	(%rbx), %edi
	subq	$1, %rbx
	call	putchar@PLT
	cmpq	%rbp, %rbx
	jne	.L21
	addq	$8, %rsp
	.cfi_def_cfa_offset 24
	movl	$10, %edi
	popq	%rbx
	.cfi_restore 3
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_restore 6
	.cfi_def_cfa_offset 8
	jmp	putchar@PLT
	.p2align 4,,10
	.p2align 3
.L24:
	movl	$10, %edi
	jmp	putchar@PLT
	.cfi_endproc
.LFE42:
	.size	print_stk, .-print_stk
	.section	.rodata.str1.1
.LC3:
	.string	"%s"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB43:
	.cfi_startproc
	endbr64
	subq	$72, %rsp
	.cfi_def_cfa_offset 80
	leaq	.LC3(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 56(%rsp)
	xorl	%eax, %eax
	movq	.LC2(%rip), %rax
	leaq	45(%rsp), %rsi
	movq	%rax, (%rsp)
	leaq	19(%rsp), %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movzbl	45(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	movl	4(%rsp), %eax
	cmpb	$66, %dl
	je	.L29
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L31:
	movzbl	46(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L37
.L35:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L34:
	movzbl	47(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L41
.L40:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L42:
	movzbl	48(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L46
.L45:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L47:
	movzbl	49(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L51
.L50:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L52:
	movzbl	50(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L56
.L55:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L57:
	movzbl	51(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L61
.L60:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L62:
	movzbl	52(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L66
.L65:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L67:
	movzbl	53(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L71
.L70:
	cmpl	(%rsp), %eax
	jge	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L72:
	movzbl	54(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L76
.L75:
	cmpl	(%rsp), %eax
	jge	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L77:
	movzbl	55(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L36
.L79:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	movb	%dl, -1(%rax)
.L74:
	movzbl	55(%rsp), %edx
	xorl	%eax, %eax
	testb	%dl, %dl
	jne	.L79
	.p2align 4,,10
	.p2align 3
.L81:
	movq	%rsp, %rdi
	call	print_stk
	movq	56(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L170
	xorl	%eax, %eax
	addq	$72, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L46:
	.cfi_restore_state
	testl	%eax, %eax
	je	.L44
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L47
.L51:
	testl	%eax, %eax
	je	.L49
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L52
.L56:
	testl	%eax, %eax
	je	.L54
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L57
.L61:
	testl	%eax, %eax
	je	.L59
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L62
.L66:
	testl	%eax, %eax
	je	.L64
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L67
.L29:
	testl	%eax, %eax
	je	.L171
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L31
.L41:
	testl	%eax, %eax
	je	.L39
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L42
.L37:
	testl	%eax, %eax
	je	.L172
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L34
.L71:
	testl	%eax, %eax
	je	.L69
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L72
.L171:
	movzbl	46(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	jne	.L35
	jmp	.L34
.L172:
	movzbl	47(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	jne	.L40
.L39:
	movzbl	48(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L44
	xorl	%eax, %eax
	jmp	.L45
.L44:
	movzbl	49(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L49
	xorl	%eax, %eax
	jmp	.L50
.L49:
	movzbl	50(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L54
	xorl	%eax, %eax
	jmp	.L55
.L54:
	movzbl	51(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L59
	xorl	%eax, %eax
	jmp	.L60
.L59:
	movzbl	52(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L64
	xorl	%eax, %eax
	jmp	.L65
.L64:
	movzbl	53(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L69
	xorl	%eax, %eax
	jmp	.L70
.L69:
	movzbl	54(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L74
	xorl	%eax, %eax
	jmp	.L75
.L76:
	testl	%eax, %eax
	je	.L74
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L77
.L30:
	call	push.part.0
.L36:
	call	pop.part.0
.L170:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE43:
	.size	main, .-main
	.section	.rodata.cst8,"aM",@progbits,8
	.align 8
.LC2:
	.long	11
	.long	0
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:

rule
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"Error: Stack overflow\n"
	.text
	.p2align 4
	.type	push.part.0, @function
push.part.0:
.LFB44:
	.cfi_startproc
	pushq	%rax
	.cfi_def_cfa_offset 16
	popq	%rax
	.cfi_def_cfa_offset 8
	leaq	.LC0(%rip), %rdi
	movl	$22, %edx
	movl	$1, %esi
	subq	$8, %rsp
	.cfi_def_cfa_offset 16
	movq	stderr(%rip), %rcx
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
	.cfi_endproc
.LFE44:
	.size	push.part.0, .-push.part.0
	.section	.rodata.str1.1
.LC1:
	.string	"Error: Stack underflow\n"
	.text
	.p2align 4
	.type	pop.part.0, @function
pop.part.0:
.LFB45:
	.cfi_startproc
	pushq	%rax
	.cfi_def_cfa_offset 16
	popq	%rax
	.cfi_def_cfa_offset 8
	leaq	.LC1(%rip), %rdi
	movl	$23, %edx
	movl	$1, %esi
	subq	$8, %rsp
	.cfi_def_cfa_offset 16
	movq	stderr(%rip), %rcx
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
	.cfi_endproc
.LFE45:
	.size	pop.part.0, .-pop.part.0
	.p2align 4
	.globl	initialize_stack
	.type	initialize_stack, @function
initialize_stack:
.LFB39:
	.cfi_startproc
	endbr64
	movq	.LC2(%rip), %rax
	movq	%rax, (%rdi)
	leaq	19(%rdi), %rax
	movq	%rax, 24(%rdi)
	ret
	.cfi_endproc
.LFE39:
	.size	initialize_stack, .-initialize_stack
	.p2align 4
	.globl	push
	.type	push, @function
push:
.LFB40:
	.cfi_startproc
	endbr64
	movl	(%rdi), %eax
	cmpl	%eax, 4(%rdi)
	jge	.L12
	movq	24(%rdi), %rax
	leaq	-1(%rax), %rdx
	movq	%rdx, 24(%rdi)
	movb	%sil, -1(%rax)
	addl	$1, 4(%rdi)
	ret
.L12:
	pushq	%rax
	.cfi_def_cfa_offset 16
	call	push.part.0
	.cfi_endproc
.LFE40:
	.size	push, .-push
	.p2align 4
	.globl	pop
	.type	pop, @function
pop:
.LFB41:
	.cfi_startproc
	endbr64
	movl	4(%rdi), %eax
	testl	%eax, %eax
	jle	.L18
	subl	$1, %eax
	addq	$1, 24(%rdi)
	movl	%eax, 4(%rdi)
	ret
.L18:
	pushq	%rax
	.cfi_def_cfa_offset 16
	call	pop.part.0
	.cfi_endproc
.LFE41:
	.size	pop, .-pop
	.p2align 4
	.globl	print_stk
	.type	print_stk, @function
print_stk:
.LFB42:
	.cfi_startproc
	endbr64
	movl	4(%rdi), %eax
	movq	24(%rdi), %rdx
	testl	%eax, %eax
	jle	.L24
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movslq	%eax, %rcx
	subl	$1, %eax
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	leaq	-2(%rdx,%rcx), %rbp
	leaq	-1(%rdx,%rcx), %rbx
	subq	%rax, %rbp
	subq	$8, %rsp
	.cfi_def_cfa_offset 32
	.p2align 4,,10
	.p2align 3
.L21:
	movsbl	(%rbx), %edi
	subq	$1, %rbx
	call	putchar@PLT
	cmpq	%rbp, %rbx
	jne	.L21
	addq	$8, %rsp
	.cfi_def_cfa_offset 24
	movl	$10, %edi
	popq	%rbx
	.cfi_restore 3
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_restore 6
	.cfi_def_cfa_offset 8
	jmp	putchar@PLT
	.p2align 4,,10
	.p2align 3
.L24:
	movl	$10, %edi
	jmp	putchar@PLT
	.cfi_endproc
.LFE42:
	.size	print_stk, .-print_stk
	.section	.rodata.str1.1
.LC3:
	.string	"%s"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB43:
	.cfi_startproc
	endbr64
	subq	$72, %rsp
	.cfi_def_cfa_offset 80
	leaq	.LC3(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 56(%rsp)
	xorl	%eax, %eax
	movq	.LC2(%rip), %rax
	leaq	45(%rsp), %rsi
	movq	%rax, (%rsp)
	leaq	19(%rsp), %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movzbl	45(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	movl	4(%rsp), %eax
	cmpb	$66, %dl
	je	.L29
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L31:
	movzbl	46(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L37
.L35:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L34:
	movzbl	47(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L41
.L40:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L42:
	movzbl	48(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L46
.L45:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L47:
	movzbl	49(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L51
.L50:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L52:
	movzbl	50(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L56
.L55:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L57:
	movzbl	51(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L61
.L60:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L62:
	movzbl	52(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L66
.L65:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L67:
	movzbl	53(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L71
.L70:
	cmpl	(%rsp), %eax
	jge	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L72:
	movzbl	54(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L76
.L75:
	cmpl	(%rsp), %eax
	jge	.L30
	movq	24(%rsp), %rax
	leaq	-1(%rax), %rcx
	movq	%rcx, 24(%rsp)
	movb	%dl, -1(%rax)
	movl	4(%rsp), %eax
	addl	$1, %eax
	movl	%eax, 4(%rsp)
.L77:
	movzbl	55(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L36
.L79:
	cmpl	%eax, (%rsp)
	jle	.L30
	movq	24(%rsp), %rax
	movb	%dl, -1(%rax)
.L74:
	movzbl	55(%rsp), %edx
	xorl	%eax, %eax
	testb	%dl, %dl
	jne	.L79
	.p2align 4,,10
	.p2align 3
.L81:
	movq	%rsp, %rdi
	call	print_stk
	movq	56(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L170
	xorl	%eax, %eax
	addq	$72, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L46:
	.cfi_restore_state
	testl	%eax, %eax
	je	.L44
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L47
.L51:
	testl	%eax, %eax
	je	.L49
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L52
.L56:
	testl	%eax, %eax
	je	.L54
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L57
.L61:
	testl	%eax, %eax
	je	.L59
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L62
.L66:
	testl	%eax, %eax
	je	.L64
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L67
.L29:
	testl	%eax, %eax
	je	.L171
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L31
.L41:
	testl	%eax, %eax
	je	.L39
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L42
.L37:
	testl	%eax, %eax
	je	.L172
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L34
.L71:
	testl	%eax, %eax
	je	.L69
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L72
.L171:
	movzbl	46(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	jne	.L35
	jmp	.L34
.L172:
	movzbl	47(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	jne	.L40
.L39:
	movzbl	48(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L44
	xorl	%eax, %eax
	jmp	.L45
.L44:
	movzbl	49(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L49
	xorl	%eax, %eax
	jmp	.L50
.L49:
	movzbl	50(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L54
	xorl	%eax, %eax
	jmp	.L55
.L54:
	movzbl	51(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L59
	xorl	%eax, %eax
	jmp	.L60
.L59:
	movzbl	52(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L64
	xorl	%eax, %eax
	jmp	.L65
.L64:
	movzbl	53(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L69
	xorl	%eax, %eax
	jmp	.L70
.L69:
	movzbl	54(%rsp), %edx
	testb	%dl, %dl
	je	.L81
	cmpb	$66, %dl
	je	.L74
	xorl	%eax, %eax
	jmp	.L75
.L76:
	testl	%eax, %eax
	je	.L74
	jle	.L36
	subl	$1, %eax
	addq	$1, 24(%rsp)
	movl	%eax, 4(%rsp)
	jmp	.L77
.L30:
	call	push.part.0
.L36:
	call	pop.part.0
.L170:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE43:
	.size	main, .-main
	.section	.rodata.cst8,"aM",@progbits,8
	.align 8
.LC2:
	.long	11
	.long	0
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:

/* ex 9_1
   hangan2020 */

#include <stdio.h>
#include <stdlib.h>
#define SIZE 11

//Stack structure
typedef struct stack{
   int size;
   int count;
   char data[SIZE];
   char *top;
} stack;

//Initialize stack array
void initialize_stack(stack *stk){
   stk->count = 0;
   stk->size = SIZE;
   stk->top = &(stk->data[SIZE]);
}

//Push function
void push(stack *stk, char elem){
   if(stk->count >= stk->size){
      fprintf(stderr, "Error: Stack overflow\n");
      exit(1);
   }
   else{
      stk->top--;
      *(stk->top) = elem;
      stk->count++;
   }
}

//Pop function
void pop(stack *stk){
   if(stk->count <= 0){
      fprintf(stderr, "Error: Stack underflow\n");
      exit(1);
   }
   else{
      stk->top++;
      stk->count--;
   }
}

// Function to print stack
void print_stk(stack *stk){
   char *p;
   p = stk->top;
   for(int i = stk->count; i > 0; i--){
      printf("%c", p[i-1]);
   }
   printf("\n");
}

int main(void){
   stack stk;
   char string[SIZE];
   int i = 0;

   initialize_stack(&stk);
   scanf("%s", &string);
   
   // Traverse from the right
   while(string[i] != '\0'){
      //If meet B and the string is not empty, delete the prev element
      if(string[i] == 'B'){
         if(stk.count != 0){
            pop(&stk);
         }
      }else{ //Otherwise push
         push(&stk, string[i]);
      }
      i++;
   }

   print_stk(&stk);

   return 0;

}
01B1
 BB11
 B01B
 02B0
 /BB1
 1B10
 B010
 B110
 B011
 B101

01
 11
 0
 00
 1
 10
 010
 110
 011
 101

Given the following C code and unoptimized assembly code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
/* ex 9_1
   hangan2020 */

#include <stdio.h>
#include <stdlib.h>
#define SIZE 11

//Stack structure
typedef struct stack{
   int size;
   int count;
   char data[SIZE];
   char *top;
} stack;

//Initialize stack array
void initialize_stack(stack *stk){
   stk->count = 0;
   stk->size = SIZE;
   stk->top = &(stk->data[SIZE]);
}

//Push function
void push(stack *stk, char elem){
   if(stk->count >= stk->size){
      fprintf(stderr, "Error: Stack overflow\n");
      exit(1);
   }
   else{
      stk->top--;
      *(stk->top) = elem;
      stk->count++;
   }
}

//Pop function
void pop(stack *stk){
   if(stk->count <= 0){
      fprintf(stderr, "Error: Stack underflow\n");
      exit(1);
   }
   else{
      stk->top++;
      stk->count--;
   }
}

// Function to print stack
void print_stk(stack *stk){
   char *p;
   p = stk->top;
   for(int i = stk->count; i > 0; i--){
      printf("%c", p[i-1]);
   }
   printf("\n");
}

int main(void){
   stack stk;
   char string[SIZE];
   int i = 0;

   initialize_stack(&stk);
   scanf("%s", &string);
   
   // Traverse from the right
   while(string[i] != '\0'){
      //If meet B and the string is not empty, delete the prev element
      if(string[i] == 'B'){
         if(stk.count != 0){
            pop(&stk);
         }
      }else{ //Otherwise push
         push(&stk, string[i]);
      }
      i++;
   }

   print_stk(&stk);

   return 0;

}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.globl	initialize_stack
	.type	initialize_stack, @function
initialize_stack:
.LFB6:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movq	%rdi, -8(%rbp)
	movq	-8(%rbp), %rax
	movl	$0, 4(%rax)
	movq	-8(%rbp), %rax
	movl	$11, (%rax)
	movq	-8(%rbp), %rax
	leaq	19(%rax), %rdx
	movq	-8(%rbp), %rax
	movq	%rdx, 24(%rax)
	nop
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE6:
	.size	initialize_stack, .-initialize_stack
	.section	.rodata
.LC0:
	.string	"Error: Stack overflow\n"
	.text
	.globl	push
	.type	push, @function
push:
.LFB7:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movq	%rdi, -8(%rbp)
	movl	%esi, %eax
	movb	%al, -12(%rbp)
	movq	-8(%rbp), %rax
	movl	4(%rax), %edx
	movq	-8(%rbp), %rax
	movl	(%rax), %eax
	cmpl	%eax, %edx
	jl	.L3
	movq	stderr(%rip), %rax
	movq	%rax, %rcx
	movl	$22, %edx
	movl	$1, %esi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
.L3:
	movq	-8(%rbp), %rax
	movq	24(%rax), %rax
	leaq	-1(%rax), %rdx
	movq	-8(%rbp), %rax
	movq	%rdx, 24(%rax)
	movq	-8(%rbp), %rax
	movq	24(%rax), %rax
	movzbl	-12(%rbp), %edx
	movb	%dl, (%rax)
	movq	-8(%rbp), %rax
	movl	4(%rax), %eax
	leal	1(%rax), %edx
	movq	-8(%rbp), %rax
	movl	%edx, 4(%rax)
	nop
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE7:
	.size	push, .-push
	.section	.rodata
.LC1:
	.string	"Error: Stack underflow\n"
	.text
	.globl	pop
	.type	pop, @function
pop:
.LFB8:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movq	%rdi, -8(%rbp)
	movq	-8(%rbp), %rax
	movl	4(%rax), %eax
	testl	%eax, %eax
	jg	.L5
	movq	stderr(%rip), %rax
	movq	%rax, %rcx
	movl	$23, %edx
	movl	$1, %esi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
.L5:
	movq	-8(%rbp), %rax
	movq	24(%rax), %rax
	leaq	1(%rax), %rdx
	movq	-8(%rbp), %rax
	movq	%rdx, 24(%rax)
	movq	-8(%rbp), %rax
	movl	4(%rax), %eax
	leal	-1(%rax), %edx
	movq	-8(%rbp), %rax
	movl	%edx, 4(%rax)
	nop
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE8:
	.size	pop, .-pop
	.globl	print_stk
	.type	print_stk, @function
print_stk:
.LFB9:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$32, %rsp
	movq	%rdi, -24(%rbp)
	movq	-24(%rbp), %rax
	movq	24(%rax), %rax
	movq	%rax, -8(%rbp)
	movq	-24(%rbp), %rax
	movl	4(%rax), %eax
	movl	%eax, -12(%rbp)
	jmp	.L7
.L8:
	movl	-12(%rbp), %eax
	cltq
	leaq	-1(%rax), %rdx
	movq	-8(%rbp), %rax
	addq	%rdx, %rax
	movzbl	(%rax), %eax
	movsbl	%al, %eax
	movl	%eax, %edi
	call	putchar@PLT
	subl	$1, -12(%rbp)
.L7:
	cmpl	$0, -12(%rbp)
	jg	.L8
	movl	$10, %edi
	call	putchar@PLT
	nop
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE9:
	.size	print_stk, .-print_stk
	.section	.rodata
.LC2:
	.string	"%s"
	.text
	.globl	main
	.type	main, @function
main:
.LFB10:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$80, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$0, -68(%rbp)
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	initialize_stack
	leaq	-19(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC2(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	jmp	.L10
.L13:
	movl	-68(%rbp), %eax
	cltq
	movzbl	-19(%rbp,%rax), %eax
	cmpb	$66, %al
	jne	.L11
	movl	-60(%rbp), %eax
	testl	%eax, %eax
	je	.L12
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	pop
	jmp	.L12
.L11:
	movl	-68(%rbp), %eax
	cltq
	movzbl	-19(%rbp,%rax), %eax
	movsbl	%al, %edx
	leaq	-64(%rbp), %rax
	movl	%edx, %esi
	movq	%rax, %rdi
	call	push
.L12:
	addl	$1, -68(%rbp)
.L10:
	movl	-68(%rbp), %eax
	cltq
	movzbl	-19(%rbp,%rax), %eax
	testb	%al, %al
	jne	.L13
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	print_stk
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L15
	call	__stack_chk_fail@PLT
.L15:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE10:
	.size	main, .-main
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:
```

Only output the optimized assembly code. Do not include any other text. Do not write any comments in the assembly code. Wrap the assembly code in ```assembly``` tags.
train
	.file	"temp.c"
	.text
	.globl	initialize_stack
	.type	initialize_stack, @function
initialize_stack:
.LFB6:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movq	%rdi, -8(%rbp)
	movq	-8(%rbp), %rax
	movl	$0, 4(%rax)
	movq	-8(%rbp), %rax
	movl	$11, (%rax)
	movq	-8(%rbp), %rax
	leaq	19(%rax), %rdx
	movq	-8(%rbp), %rax
	movq	%rdx, 24(%rax)
	nop
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE6:
	.size	initialize_stack, .-initialize_stack
	.section	.rodata
.LC0:
	.string	"Error: Stack overflow\n"
	.text
	.globl	push
	.type	push, @function
push:
.LFB7:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movq	%rdi, -8(%rbp)
	movl	%esi, %eax
	movb	%al, -12(%rbp)
	movq	-8(%rbp), %rax
	movl	4(%rax), %edx
	movq	-8(%rbp), %rax
	movl	(%rax), %eax
	cmpl	%eax, %edx
	jl	.L3
	movq	stderr(%rip), %rax
	movq	%rax, %rcx
	movl	$22, %edx
	movl	$1, %esi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
.L3:
	movq	-8(%rbp), %rax
	movq	24(%rax), %rax
	leaq	-1(%rax), %rdx
	movq	-8(%rbp), %rax
	movq	%rdx, 24(%rax)
	movq	-8(%rbp), %rax
	movq	24(%rax), %rax
	movzbl	-12(%rbp), %edx
	movb	%dl, (%rax)
	movq	-8(%rbp), %rax
	movl	4(%rax), %eax
	leal	1(%rax), %edx
	movq	-8(%rbp), %rax
	movl	%edx, 4(%rax)
	nop
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE7:
	.size	push, .-push
	.section	.rodata
.LC1:
	.string	"Error: Stack underflow\n"
	.text
	.globl	pop
	.type	pop, @function
pop:
.LFB8:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movq	%rdi, -8(%rbp)
	movq	-8(%rbp), %rax
	movl	4(%rax), %eax
	testl	%eax, %eax
	jg	.L5
	movq	stderr(%rip), %rax
	movq	%rax, %rcx
	movl	$23, %edx
	movl	$1, %esi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	call	fwrite@PLT
	movl	$1, %edi
	call	exit@PLT
.L5:
	movq	-8(%rbp), %rax
	movq	24(%rax), %rax
	leaq	1(%rax), %rdx
	movq	-8(%rbp), %rax
	movq	%rdx, 24(%rax)
	movq	-8(%rbp), %rax
	movl	4(%rax), %eax
	leal	-1(%rax), %edx
	movq	-8(%rbp), %rax
	movl	%edx, 4(%rax)
	nop
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE8:
	.size	pop, .-pop
	.globl	print_stk
	.type	print_stk, @function
print_stk:
.LFB9:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$32, %rsp
	movq	%rdi, -24(%rbp)
	movq	-24(%rbp), %rax
	movq	24(%rax), %rax
	movq	%rax, -8(%rbp)
	movq	-24(%rbp), %rax
	movl	4(%rax), %eax
	movl	%eax, -12(%rbp)
	jmp	.L7
.L8:
	movl	-12(%rbp), %eax
	cltq
	leaq	-1(%rax), %rdx
	movq	-8(%rbp), %rax
	addq	%rdx, %rax
	movzbl	(%rax), %eax
	movsbl	%al, %eax
	movl	%eax, %edi
	call	putchar@PLT
	subl	$1, -12(%rbp)
.L7:
	cmpl	$0, -12(%rbp)
	jg	.L8
	movl	$10, %edi
	call	putchar@PLT
	nop
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE9:
	.size	print_stk, .-print_stk
	.section	.rodata
.LC2:
	.string	"%s"
	.text
	.globl	main
	.type	main, @function
main:
.LFB10:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$80, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$0, -68(%rbp)
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	initialize_stack
	leaq	-19(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC2(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	jmp	.L10
.L13:
	movl	-68(%rbp), %eax
	cltq
	movzbl	-19(%rbp,%rax), %eax
	cmpb	$66, %al
	jne	.L11
	movl	-60(%rbp), %eax
	testl	%eax, %eax
	je	.L12
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	pop
	jmp	.L12
.L11:
	movl	-68(%rbp), %eax
	cltq
	movzbl	-19(%rbp,%rax), %eax
	movsbl	%al, %edx
	leaq	-64(%rbp), %rax
	movl	%edx, %esi
	movq	%rax, %rdi
	call	push
.L12:
	addl	$1, -68(%rbp)
.L10:
	movl	-68(%rbp), %eax
	cltq
	movzbl	-19(%rbp,%rax), %eax
	testb	%al, %al
	jne	.L13
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	print_stk
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L15
	call	__stack_chk_fail@PLT
.L15:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE10:
	.size	main, .-main
	.ident	"GCC: (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:
