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

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

int main()
{
    char s[201];
    scanf("%s",s);

    int len = strlen(s);
    int i,j;
    for (i = 2; i < len; i += 2)
    {
        for (j = 0; j < (len - i) / 2; j++)
        {
            if(s[j] != s[j + (len - i) / 2])break;
        }
        if(j == (len - i) / 2)break;
    }
    printf("%d",j * 2);
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%s"
.LC1:
	.string	"%d"
	.text
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$240, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	leaq	-224(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-224(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -228(%rbp)
	movl	$2, -236(%rbp)
	jmp	.L2
.L9:
	movl	$0, -232(%rbp)
	jmp	.L3
.L6:
	movl	-232(%rbp), %eax
	cltq
	movzbl	-224(%rbp,%rax), %edx
	movl	-228(%rbp), %eax
	subl	-236(%rbp), %eax
	movl	%eax, %ecx
	shrl	$31, %ecx
	addl	%ecx, %eax
	sarl	%eax
	movl	%eax, %ecx
	movl	-232(%rbp), %eax
	addl	%ecx, %eax
	cltq
	movzbl	-224(%rbp,%rax), %eax
	cmpb	%al, %dl
	jne	.L12
	addl	$1, -232(%rbp)
.L3:
	movl	-228(%rbp), %eax
	subl	-236(%rbp), %eax
	movl	%eax, %edx
	shrl	$31, %edx
	addl	%edx, %eax
	sarl	%eax
	cmpl	%eax, -232(%rbp)
	jl	.L6
	jmp	.L5
.L12:
	nop
.L5:
	movl	-228(%rbp), %eax
	subl	-236(%rbp), %eax
	movl	%eax, %edx
	shrl	$31, %edx
	addl	%edx, %eax
	sarl	%eax
	cmpl	%eax, -232(%rbp)
	je	.L13
	addl	$2, -236(%rbp)
.L2:
	movl	-236(%rbp), %eax
	cmpl	-228(%rbp), %eax
	jl	.L9
	jmp	.L8
.L13:
	nop
.L8:
	movl	-232(%rbp), %eax
	addl	%eax, %eax
	movl	%eax, %esi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L11
	call	__stack_chk_fail@PLT
.L11:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.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	"%s"
.LC1:
	.string	"%d"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$232, %rsp
	.cfi_def_cfa_offset 256
	movq	%fs:40, %rax
	movq	%rax, 216(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbp, %rdi
	call	strlen@PLT
	cmpq	$2, %rax
	jbe	.L2
	leal	-4(%rax), %edi
	leal	-2(%rax), %esi
	subl	$3, %eax
	andl	$-2, %eax
	subl	%eax, %edi
	.p2align 4,,10
	.p2align 3
.L3:
	movl	%esi, %edx
	movq	%rbp, %rax
	xorl	%ebx, %ebx
	shrl	$31, %edx
	addl	%esi, %edx
	sarl	%edx
	movslq	%edx, %rcx
	cmpl	$1, %esi
	jg	.L5
	jmp	.L7
	.p2align 4,,10
	.p2align 3
.L14:
	addl	$1, %ebx
	addq	$1, %rax
	cmpl	%edx, %ebx
	jge	.L7
.L5:
	movzbl	(%rax,%rcx), %r8d
	cmpb	%r8b, (%rax)
	je	.L14
	subl	$2, %esi
	cmpl	%edi, %esi
	jne	.L3
.L2:
	xorl	%eax, %eax
	leal	(%rbx,%rbx), %edx
	movl	$1, %edi
	leaq	.LC1(%rip), %rsi
	call	__printf_chk@PLT
	movq	216(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L15
	addq	$232, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
	.p2align 4,,10
	.p2align 3
.L7:
	.cfi_restore_state
	cmpl	%edx, %ebx
	je	.L2
	subl	$2, %esi
	cmpl	%edi, %esi
	jne	.L3
	jmp	.L2
.L15:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE35:
	.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
	.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	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$232, %rsp
	.cfi_def_cfa_offset 256
	movq	%fs:40, %rax
	movq	%rax, 216(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbp, %rdi
	call	strlen@PLT
	cmpq	$2, %rax
	jbe	.L2
	leal	-4(%rax), %edi
	leal	-2(%rax), %esi
	subl	$3, %eax
	andl	$-2, %eax
	subl	%eax, %edi
	.p2align 4,,10
	.p2align 3
.L3:
	movl	%esi, %edx
	movq	%rbp, %rax
	xorl	%ebx, %ebx
	shrl	$31, %edx
	addl	%esi, %edx
	sarl	%edx
	movslq	%edx, %rcx
	cmpl	$1, %esi
	jg	.L5
	jmp	.L7
	.p2align 4,,10
	.p2align 3
.L14:
	addl	$1, %ebx
	addq	$1, %rax
	cmpl	%edx, %ebx
	jge	.L7
.L5:
	movzbl	(%rax,%rcx), %r8d
	cmpb	%r8b, (%rax)
	je	.L14
	subl	$2, %esi
	cmpl	%edi, %esi
	jne	.L3
.L2:
	xorl	%eax, %eax
	leal	(%rbx,%rbx), %edx
	movl	$1, %edi
	leaq	.LC1(%rip), %rsi
	call	__printf_chk@PLT
	movq	216(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L15
	addq	$232, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
	.p2align 4,,10
	.p2align 3
.L7:
	.cfi_restore_state
	cmpl	%edx, %ebx
	je	.L2
	subl	$2, %esi
	cmpl	%edi, %esi
	jne	.L3
	jmp	.L2
.L15:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE35:
	.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:

#include <stdio.h>
#include <string.h>

int main()
{
    char s[201];
    scanf("%s",s);

    int len = strlen(s);
    int i,j;
    for (i = 2; i < len; i += 2)
    {
        for (j = 0; j < (len - i) / 2; j++)
        {
            if(s[j] != s[j + (len - i) / 2])break;
        }
        if(j == (len - i) / 2)break;
    }
    printf("%d",j * 2);
}
cbacbacbacba
 xxxy
 akakasaakasakasakaakas
 bbbabbbacabc
 akasakaakasakasaka`kas
 cbacbacbacbb
 abaabacaab
 bbcabcaacabc
 xxwx
 abcabcabcaac

6 2 4 8 14 6 6 2 2 6
Given the following C code and unoptimized assembly code, your task is to generate highly optimized x86-64 assembly code.
C Code:

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

int main()
{
    char s[201];
    scanf("%s",s);

    int len = strlen(s);
    int i,j;
    for (i = 2; i < len; i += 2)
    {
        for (j = 0; j < (len - i) / 2; j++)
        {
            if(s[j] != s[j + (len - i) / 2])break;
        }
        if(j == (len - i) / 2)break;
    }
    printf("%d",j * 2);
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%s"
.LC1:
	.string	"%d"
	.text
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$240, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	leaq	-224(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-224(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -228(%rbp)
	movl	$2, -236(%rbp)
	jmp	.L2
.L9:
	movl	$0, -232(%rbp)
	jmp	.L3
.L6:
	movl	-232(%rbp), %eax
	cltq
	movzbl	-224(%rbp,%rax), %edx
	movl	-228(%rbp), %eax
	subl	-236(%rbp), %eax
	movl	%eax, %ecx
	shrl	$31, %ecx
	addl	%ecx, %eax
	sarl	%eax
	movl	%eax, %ecx
	movl	-232(%rbp), %eax
	addl	%ecx, %eax
	cltq
	movzbl	-224(%rbp,%rax), %eax
	cmpb	%al, %dl
	jne	.L12
	addl	$1, -232(%rbp)
.L3:
	movl	-228(%rbp), %eax
	subl	-236(%rbp), %eax
	movl	%eax, %edx
	shrl	$31, %edx
	addl	%edx, %eax
	sarl	%eax
	cmpl	%eax, -232(%rbp)
	jl	.L6
	jmp	.L5
.L12:
	nop
.L5:
	movl	-228(%rbp), %eax
	subl	-236(%rbp), %eax
	movl	%eax, %edx
	shrl	$31, %edx
	addl	%edx, %eax
	sarl	%eax
	cmpl	%eax, -232(%rbp)
	je	.L13
	addl	$2, -236(%rbp)
.L2:
	movl	-236(%rbp), %eax
	cmpl	-228(%rbp), %eax
	jl	.L9
	jmp	.L8
.L13:
	nop
.L8:
	movl	-232(%rbp), %eax
	addl	%eax, %eax
	movl	%eax, %esi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L11
	call	__stack_chk_fail@PLT
.L11:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.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
	.section	.rodata
.LC0:
	.string	"%s"
.LC1:
	.string	"%d"
	.text
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$240, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	leaq	-224(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-224(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -228(%rbp)
	movl	$2, -236(%rbp)
	jmp	.L2
.L9:
	movl	$0, -232(%rbp)
	jmp	.L3
.L6:
	movl	-232(%rbp), %eax
	cltq
	movzbl	-224(%rbp,%rax), %edx
	movl	-228(%rbp), %eax
	subl	-236(%rbp), %eax
	movl	%eax, %ecx
	shrl	$31, %ecx
	addl	%ecx, %eax
	sarl	%eax
	movl	%eax, %ecx
	movl	-232(%rbp), %eax
	addl	%ecx, %eax
	cltq
	movzbl	-224(%rbp,%rax), %eax
	cmpb	%al, %dl
	jne	.L12
	addl	$1, -232(%rbp)
.L3:
	movl	-228(%rbp), %eax
	subl	-236(%rbp), %eax
	movl	%eax, %edx
	shrl	$31, %edx
	addl	%edx, %eax
	sarl	%eax
	cmpl	%eax, -232(%rbp)
	jl	.L6
	jmp	.L5
.L12:
	nop
.L5:
	movl	-228(%rbp), %eax
	subl	-236(%rbp), %eax
	movl	%eax, %edx
	shrl	$31, %edx
	addl	%edx, %eax
	sarl	%eax
	cmpl	%eax, -232(%rbp)
	je	.L13
	addl	$2, -236(%rbp)
.L2:
	movl	-236(%rbp), %eax
	cmpl	-228(%rbp), %eax
	jl	.L9
	jmp	.L8
.L13:
	nop
.L8:
	movl	-232(%rbp), %eax
	addl	%eax, %eax
	movl	%eax, %esi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L11
	call	__stack_chk_fail@PLT
.L11:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.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:
