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

```c
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>

char buffer[100001];
int main(void)
{
	int length;
	int k;
	int cent;

	scanf("%s", buffer);
	length = strlen(buffer);
	cent = length;
	if (length & 1){
		int p = (length) / 2;
		int i;
		for (i = 1; i <= p; ++i){
			if (buffer[p - i] != buffer[p] || buffer[p + i] != buffer[p]){
				cent = 2 * i - 1;
				break;
			}
		}
	}
	else{
		int p = (length) / 2;
		int i;
		for (i = 0; i < p; ++i){
			if (buffer[p - i - 1] != buffer[p] || buffer[p + i] != buffer[p]){
				cent = 2 * i;
				break;
			}
		}
	}
	printf("%d", ((length - cent) / 2 + cent));
	return 0;
}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"%d"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	buffer(%rip), %rbx
	leaq	.LC0(%rip), %rdi
	xorl	%eax, %eax
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	%eax, %r8d
	movq	%rax, %rcx
	andl	$1, %r8d
	je	.L2
	sarl	%eax
	je	.L3
	movslq	%eax, %rdx
	leal	1(%rax), %r9d
	movl	$1, %eax
	movzbl	(%rbx,%rdx), %esi
	addq	%rbx, %rdx
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	(%rdx,%rax), %sil
	jne	.L5
	addq	$1, %rax
	cmpq	%rax, %r9
	je	.L10
.L6:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, (%rdx,%rdi)
	je	.L4
.L5:
	leal	-1(%r8,%r8), %r8d
.L3:
	subl	%r8d, %ecx
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	movl	%ecx, %edx
	shrl	$31, %edx
	addl	%ecx, %edx
	sarl	%edx
	addl	%r8d, %edx
	call	__printf_chk@PLT
	xorl	%eax, %eax
	popq	%rbx
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L2:
	.cfi_restore_state
	movl	%eax, %r9d
	sarl	%r9d
	je	.L10
	movslq	%r9d, %r9
	xorl	%eax, %eax
	movzbl	(%rbx,%r9), %esi
	leaq	(%rbx,%r9), %rdx
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L7:
	cmpb	(%rdx,%rax), %sil
	jne	.L8
	addq	$1, %rax
	cmpq	%r9, %rax
	je	.L10
.L9:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, -1(%rdx,%rdi)
	je	.L7
.L8:
	addl	%r8d, %r8d
	jmp	.L3
.L10:
	movl	%ecx, %r8d
	jmp	.L3
	.cfi_endproc
.LFE35:
	.size	main, .-main
	.globl	buffer
	.bss
	.align 32
	.type	buffer, @object
	.size	buffer, 100001
buffer:
	.zero	100001
	.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	"%d"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	buffer(%rip), %rbx
	leaq	.LC0(%rip), %rdi
	xorl	%eax, %eax
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	%eax, %r8d
	movq	%rax, %rcx
	andl	$1, %r8d
	je	.L2
	sarl	%eax
	je	.L3
	movslq	%eax, %rdx
	leal	1(%rax), %r9d
	movl	$1, %eax
	movzbl	(%rbx,%rdx), %esi
	addq	%rbx, %rdx
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	(%rdx,%rax), %sil
	jne	.L5
	addq	$1, %rax
	cmpq	%rax, %r9
	je	.L10
.L6:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, (%rdx,%rdi)
	je	.L4
.L5:
	leal	-1(%r8,%r8), %r8d
.L3:
	subl	%r8d, %ecx
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	movl	%ecx, %edx
	shrl	$31, %edx
	addl	%ecx, %edx
	sarl	%edx
	addl	%r8d, %edx
	call	__printf_chk@PLT
	xorl	%eax, %eax
	popq	%rbx
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L2:
	.cfi_restore_state
	movl	%eax, %r9d
	sarl	%r9d
	je	.L10
	movslq	%r9d, %r9
	xorl	%eax, %eax
	movzbl	(%rbx,%r9), %esi
	leaq	(%rbx,%r9), %rdx
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L7:
	cmpb	(%rdx,%rax), %sil
	jne	.L8
	addq	$1, %rax
	cmpq	%r9, %rax
	je	.L10
.L9:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, -1(%rdx,%rdi)
	je	.L7
.L8:
	addl	%r8d, %r8d
	jmp	.L3
.L10:
	movl	%ecx, %r8d
	jmp	.L3
	.cfi_endproc
.LFE35:
	.size	main, .-main
	.globl	buffer
	.bss
	.align 32
	.type	buffer, @object
	.size	buffer, 100001
buffer:
	.zero	100001
	.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	"%d"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	buffer(%rip), %rbx
	leaq	.LC0(%rip), %rdi
	xorl	%eax, %eax
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	%eax, %r8d
	movq	%rax, %rcx
	andl	$1, %r8d
	je	.L2
	sarl	%eax
	je	.L3
	movslq	%eax, %rdx
	leal	1(%rax), %r9d
	movl	$1, %eax
	movzbl	(%rbx,%rdx), %esi
	addq	%rbx, %rdx
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	(%rdx,%rax), %sil
	jne	.L5
	addq	$1, %rax
	cmpq	%rax, %r9
	je	.L10
.L6:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, (%rdx,%rdi)
	je	.L4
.L5:
	leal	-1(%r8,%r8), %r8d
.L3:
	subl	%r8d, %ecx
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	movl	%ecx, %edx
	shrl	$31, %edx
	addl	%ecx, %edx
	sarl	%edx
	addl	%r8d, %edx
	call	__printf_chk@PLT
	xorl	%eax, %eax
	popq	%rbx
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L2:
	.cfi_restore_state
	movl	%eax, %r9d
	sarl	%r9d
	je	.L10
	movslq	%r9d, %r9
	xorl	%eax, %eax
	movzbl	(%rbx,%r9), %esi
	leaq	(%rbx,%r9), %rdx
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L7:
	cmpb	(%rdx,%rax), %sil
	jne	.L8
	addq	$1, %rax
	cmpq	%r9, %rax
	je	.L10
.L9:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, -1(%rdx,%rdi)
	je	.L7
.L8:
	addl	%r8d, %r8d
	jmp	.L3
.L10:
	movl	%ecx, %r8d
	jmp	.L3
	.cfi_endproc
.LFE35:
	.size	main, .-main
	.globl	buffer
	.bss
	.align 32
	.type	buffer, @object
	.size	buffer, 100001
buffer:
	.zero	100001
	.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
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>

char buffer[100001];
int main(void)
{
	int length;
	int k;
	int cent;

	scanf("%s", buffer);
	length = strlen(buffer);
	cent = length;
	if (length & 1){
		int p = (length) / 2;
		int i;
		for (i = 1; i <= p; ++i){
			if (buffer[p - i] != buffer[p] || buffer[p + i] != buffer[p]){
				cent = 2 * i - 1;
				break;
			}
		}
	}
	else{
		int p = (length) / 2;
		int i;
		for (i = 0; i < p; ++i){
			if (buffer[p - i - 1] != buffer[p] || buffer[p + i] != buffer[p]){
				cent = 2 * i;
				break;
			}
		}
	}
	printf("%d", ((length - cent) / 2 + cent));
	return 0;
}
```
Given the following C code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>

char buffer[100001];
int main(void)
{
	int length;
	int k;
	int cent;

	scanf("%s", buffer);
	length = strlen(buffer);
	cent = length;
	if (length & 1){
		int p = (length) / 2;
		int i;
		for (i = 1; i <= p; ++i){
			if (buffer[p - i] != buffer[p] || buffer[p + i] != buffer[p]){
				cent = 2 * i - 1;
				break;
			}
		}
	}
	else{
		int p = (length) / 2;
		int i;
		for (i = 0; i < p; ++i){
			if (buffer[p - i - 1] != buffer[p] || buffer[p + i] != buffer[p]){
				cent = 2 * i;
				break;
			}
		}
	}
	printf("%d", ((length - cent) / 2 + cent));
	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:

010

2
Given the following C code and assembly code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>

char buffer[100001];
int main(void)
{
	int length;
	int k;
	int cent;

	scanf("%s", buffer);
	length = strlen(buffer);
	cent = length;
	if (length & 1){
		int p = (length) / 2;
		int i;
		for (i = 1; i <= p; ++i){
			if (buffer[p - i] != buffer[p] || buffer[p + i] != buffer[p]){
				cent = 2 * i - 1;
				break;
			}
		}
	}
	else{
		int p = (length) / 2;
		int i;
		for (i = 0; i < p; ++i){
			if (buffer[p - i - 1] != buffer[p] || buffer[p + i] != buffer[p]){
				cent = 2 * i;
				break;
			}
		}
	}
	printf("%d", ((length - cent) / 2 + cent));
	return 0;
}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"%d"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	buffer(%rip), %rbx
	leaq	.LC0(%rip), %rdi
	xorl	%eax, %eax
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	%eax, %r8d
	movq	%rax, %rcx
	andl	$1, %r8d
	je	.L2
	sarl	%eax
	je	.L3
	movslq	%eax, %rdx
	leal	1(%rax), %r9d
	movl	$1, %eax
	movzbl	(%rbx,%rdx), %esi
	addq	%rbx, %rdx
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	(%rdx,%rax), %sil
	jne	.L5
	addq	$1, %rax
	cmpq	%rax, %r9
	je	.L10
.L6:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, (%rdx,%rdi)
	je	.L4
.L5:
	leal	-1(%r8,%r8), %r8d
.L3:
	subl	%r8d, %ecx
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	movl	%ecx, %edx
	shrl	$31, %edx
	addl	%ecx, %edx
	sarl	%edx
	addl	%r8d, %edx
	call	__printf_chk@PLT
	xorl	%eax, %eax
	popq	%rbx
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L2:
	.cfi_restore_state
	movl	%eax, %r9d
	sarl	%r9d
	je	.L10
	movslq	%r9d, %r9
	xorl	%eax, %eax
	movzbl	(%rbx,%r9), %esi
	leaq	(%rbx,%r9), %rdx
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L7:
	cmpb	(%rdx,%rax), %sil
	jne	.L8
	addq	$1, %rax
	cmpq	%r9, %rax
	je	.L10
.L9:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, -1(%rdx,%rdi)
	je	.L7
.L8:
	addl	%r8d, %r8d
	jmp	.L3
.L10:
	movl	%ecx, %r8d
	jmp	.L3
	.cfi_endproc
.LFE35:
	.size	main, .-main
	.globl	buffer
	.bss
	.align 32
	.type	buffer, @object
	.size	buffer, 100001
buffer:
	.zero	100001
	.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	"%d"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	buffer(%rip), %rbx
	leaq	.LC0(%rip), %rdi
	xorl	%eax, %eax
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	%eax, %r8d
	movq	%rax, %rcx
	andl	$1, %r8d
	je	.L2
	sarl	%eax
	je	.L3
	movslq	%eax, %rdx
	leal	1(%rax), %r9d
	movl	$1, %eax
	movzbl	(%rbx,%rdx), %esi
	addq	%rbx, %rdx
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	(%rdx,%rax), %sil
	jne	.L5
	addq	$1, %rax
	cmpq	%rax, %r9
	je	.L10
.L6:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, (%rdx,%rdi)
	je	.L4
.L5:
	leal	-1(%r8,%r8), %r8d
.L3:
	subl	%r8d, %ecx
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	movl	%ecx, %edx
	shrl	$31, %edx
	addl	%ecx, %edx
	sarl	%edx
	addl	%r8d, %edx
	call	__printf_chk@PLT
	xorl	%eax, %eax
	popq	%rbx
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L2:
	.cfi_restore_state
	movl	%eax, %r9d
	sarl	%r9d
	je	.L10
	movslq	%r9d, %r9
	xorl	%eax, %eax
	movzbl	(%rbx,%r9), %esi
	leaq	(%rbx,%r9), %rdx
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L7:
	cmpb	(%rdx,%rax), %sil
	jne	.L8
	addq	$1, %rax
	cmpq	%r9, %rax
	je	.L10
.L9:
	movq	%rax, %rdi
	movl	%eax, %r8d
	negq	%rdi
	cmpb	%sil, -1(%rdx,%rdi)
	je	.L7
.L8:
	addl	%r8d, %r8d
	jmp	.L3
.L10:
	movl	%ecx, %r8d
	jmp	.L3
	.cfi_endproc
.LFE35:
	.size	main, .-main
	.globl	buffer
	.bss
	.align 32
	.type	buffer, @object
	.size	buffer, 100001
buffer:
	.zero	100001
	.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:
```