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

```c
#include<stdio.h>
int main(){
  char c=0,s[1000];
  int n=0,i;
  scanf("%s",s);
  for(i=0;s[i];i++){
    if(c-s[i])n++;
    c=s[i];
  }//printf("%d\n",n);
  printf("%c\n",n%2?s[0]:'o');
  return 0;
}
  ```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"%c\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$1016, %rsp
	.cfi_def_cfa_offset 1024
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 1000(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	(%rsp), %edx
	testb	%dl, %dl
	je	.L6
	leaq	1(%rsp), %rax
	movl	%edx, %ecx
	xorl	%edi, %edi
	xorl	%r8d, %r8d
	jmp	.L4
	.p2align 4,,10
	.p2align 3
.L7:
	movl	%esi, %ecx
.L4:
	xorl	%esi, %esi
	cmpb	%cl, %r8b
	movl	%ecx, %r8d
	setne	%sil
	addq	$1, %rax
	addl	%esi, %edi
	movzbl	-1(%rax), %esi
	testb	%sil, %sil
	jne	.L7
	andl	$1, %edi
	movl	$111, %eax
	cmove	%eax, %edx
.L2:
	xorl	%eax, %eax
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	1000(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L11
	xorl	%eax, %eax
	addq	$1016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L6:
	.cfi_restore_state
	movl	$111, %edx
	jmp	.L2
.L11:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE23:
	.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.
Optimized Assembly Code:

user
```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"%c\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$1016, %rsp
	.cfi_def_cfa_offset 1024
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 1000(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	(%rsp), %edx
	testb	%dl, %dl
	je	.L6
	leaq	1(%rsp), %rax
	movl	%edx, %ecx
	xorl	%edi, %edi
	xorl	%r8d, %r8d
	jmp	.L4
	.p2align 4,,10
	.p2align 3
.L7:
	movl	%esi, %ecx
.L4:
	xorl	%esi, %esi
	cmpb	%cl, %r8b
	movl	%ecx, %r8d
	setne	%sil
	addq	$1, %rax
	addl	%esi, %edi
	movzbl	-1(%rax), %esi
	testb	%sil, %sil
	jne	.L7
	andl	$1, %edi
	movl	$111, %eax
	cmove	%eax, %edx
.L2:
	xorl	%eax, %eax
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	1000(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L11
	xorl	%eax, %eax
	addq	$1016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L6:
	.cfi_restore_state
	movl	$111, %edx
	jmp	.L2
.L11:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE23:
	.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:
```
rule
```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"%c\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$1016, %rsp
	.cfi_def_cfa_offset 1024
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 1000(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	(%rsp), %edx
	testb	%dl, %dl
	je	.L6
	leaq	1(%rsp), %rax
	movl	%edx, %ecx
	xorl	%edi, %edi
	xorl	%r8d, %r8d
	jmp	.L4
	.p2align 4,,10
	.p2align 3
.L7:
	movl	%esi, %ecx
.L4:
	xorl	%esi, %esi
	cmpb	%cl, %r8b
	movl	%ecx, %r8d
	setne	%sil
	addq	$1, %rax
	addl	%esi, %edi
	movzbl	-1(%rax), %esi
	testb	%sil, %sil
	jne	.L7
	andl	$1, %edi
	movl	$111, %eax
	cmove	%eax, %edx
.L2:
	xorl	%eax, %eax
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	1000(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L11
	xorl	%eax, %eax
	addq	$1016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L6:
	.cfi_restore_state
	movl	$111, %edx
	jmp	.L2
.L11:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE23:
	.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:
```
```c
#include<stdio.h>
int main(){
  char c=0,s[1000];
  int n=0,i;
  scanf("%s",s);
  for(i=0;s[i];i++){
    if(c-s[i])n++;
    c=s[i];
  }//printf("%d\n",n);
  printf("%c\n",n%2?s[0]:'o');
  return 0;
}
  ```
Given the following C code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
#include<stdio.h>
int main(){
  char c=0,s[1000];
  int n=0,i;
  scanf("%s",s);
  for(i=0;s[i];i++){
    if(c-s[i])n++;
    c=s[i];
  }//printf("%d\n",n);
  printf("%c\n",n%2?s[0]:'o');
  return 0;
}
  ```

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.
Optimized Assembly Code:

oxxoxoo

o

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

```c
#include<stdio.h>
int main(){
  char c=0,s[1000];
  int n=0,i;
  scanf("%s",s);
  for(i=0;s[i];i++){
    if(c-s[i])n++;
    c=s[i];
  }//printf("%d\n",n);
  printf("%c\n",n%2?s[0]:'o');
  return 0;
}
  ```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"%c\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$1016, %rsp
	.cfi_def_cfa_offset 1024
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 1000(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	(%rsp), %edx
	testb	%dl, %dl
	je	.L6
	leaq	1(%rsp), %rax
	movl	%edx, %ecx
	xorl	%edi, %edi
	xorl	%r8d, %r8d
	jmp	.L4
	.p2align 4,,10
	.p2align 3
.L7:
	movl	%esi, %ecx
.L4:
	xorl	%esi, %esi
	cmpb	%cl, %r8b
	movl	%ecx, %r8d
	setne	%sil
	addq	$1, %rax
	addl	%esi, %edi
	movzbl	-1(%rax), %esi
	testb	%sil, %sil
	jne	.L7
	andl	$1, %edi
	movl	$111, %eax
	cmove	%eax, %edx
.L2:
	xorl	%eax, %eax
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	1000(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L11
	xorl	%eax, %eax
	addq	$1016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L6:
	.cfi_restore_state
	movl	$111, %edx
	jmp	.L2
.L11:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE23:
	.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.
Optimized Assembly Code:

train
```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"%c\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$1016, %rsp
	.cfi_def_cfa_offset 1024
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 1000(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	(%rsp), %edx
	testb	%dl, %dl
	je	.L6
	leaq	1(%rsp), %rax
	movl	%edx, %ecx
	xorl	%edi, %edi
	xorl	%r8d, %r8d
	jmp	.L4
	.p2align 4,,10
	.p2align 3
.L7:
	movl	%esi, %ecx
.L4:
	xorl	%esi, %esi
	cmpb	%cl, %r8b
	movl	%ecx, %r8d
	setne	%sil
	addq	$1, %rax
	addl	%esi, %edi
	movzbl	-1(%rax), %esi
	testb	%sil, %sil
	jne	.L7
	andl	$1, %edi
	movl	$111, %eax
	cmove	%eax, %edx
.L2:
	xorl	%eax, %eax
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	1000(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L11
	xorl	%eax, %eax
	addq	$1016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L6:
	.cfi_restore_state
	movl	$111, %edx
	jmp	.L2
.L11:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE23:
	.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:
```