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>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#include <limits.h>

int main(void){
    int count=0,ans=0;
    char s[300000],t[300000];
    scanf("%s",s);
    for (int i=0; i<strlen(s); i++){
        if (s[i]!='x'){
            t[count]=s[i];
            count++;
        }
    }
    t[count]='\0';
    for (int i=0; i<strlen(t)/2; i++){
        if (t[i]!=t[strlen(t)-1-i]){
            printf("-1\n");
            return 0;
        }
    }
    int n=strlen(s);
    for (int i=0; i<n/2; i++){
        if (s[i]!=s[n-1-i]){
            if (s[i]=='x'){
                ans++;
                n++;
            } else {
                ans++;
                n--;
                i--;
            }
        }
    }
    printf("%d\n",ans);
	return 0 ;
}```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"-1"
.LC2:
	.string	"%d\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	leaq	-598016(%rsp), %r11
	.cfi_def_cfa 11, 598040
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$2008, %rsp
	.cfi_def_cfa_offset 600048
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 600008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movq	%rax, %rbp
	testq	%rax, %rax
	je	.L14
	xorl	%eax, %eax
	xorl	%ecx, %ecx
	.p2align 4,,10
	.p2align 3
.L5:
	movzbl	(%rbx,%rax), %edx
	cmpb	$120, %dl
	je	.L3
	movslq	%ecx, %rsi
	addq	$1, %rax
	addl	$1, %ecx
	movb	%dl, 300000(%rsp,%rsi)
	cmpq	%rbp, %rax
	jb	.L5
.L2:
	leaq	300000(%rsp), %rbx
	movslq	%ecx, %rcx
	movq	%rbx, %rdi
	movb	$0, 300000(%rsp,%rcx)
	call	strlen@PLT
	movq	%rbx, %rdx
	movq	%rax, %rdi
	leaq	(%rbx,%rax), %rcx
	shrq	%rdi
	addq	%rbx, %rdi
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L8:
	movzbl	(%rdx), %esi
	movzbl	-1(%rcx), %eax
	addq	$1, %rdx
	subq	$1, %rcx
	cmpb	%al, %sil
	jne	.L21
.L6:
	cmpq	%rdi, %rdx
	jne	.L8
	movl	%ebp, %ecx
	cmpq	$1, %rbp
	jbe	.L15
	xorl	%edx, %edx
	xorl	%r8d, %r8d
	jmp	.L12
	.p2align 4,,10
	.p2align 3
.L23:
	addl	$1, %r8d
	cmpb	$120, %sil
	je	.L22
	movl	%edi, %ecx
.L11:
	movl	%ecx, %eax
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jge	.L9
.L12:
	movslq	%edx, %rax
	leal	-1(%rcx), %edi
	movzbl	(%rsp,%rax), %esi
	movl	%edi, %eax
	subl	%edx, %eax
	cltq
	cmpb	(%rsp,%rax), %sil
	jne	.L23
	movl	%ecx, %eax
	addl	$1, %edx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jl	.L12
.L9:
	movl	%r8d, %edx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L7:
	movq	600008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L24
	addq	$600024, %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
.L3:
	.cfi_restore_state
	addq	$1, %rax
	cmpq	%rbp, %rax
	jb	.L5
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L22:
	addl	$1, %ecx
	addl	$1, %edx
	jmp	.L11
.L21:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L7
.L15:
	xorl	%r8d, %r8d
	jmp	.L9
.L14:
	xorl	%ecx, %ecx
	jmp	.L2
.L24:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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	"-1"
.LC2:
	.string	"%d\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	leaq	-598016(%rsp), %r11
	.cfi_def_cfa 11, 598040
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$2008, %rsp
	.cfi_def_cfa_offset 600048
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 600008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movq	%rax, %rbp
	testq	%rax, %rax
	je	.L14
	xorl	%eax, %eax
	xorl	%ecx, %ecx
	.p2align 4,,10
	.p2align 3
.L5:
	movzbl	(%rbx,%rax), %edx
	cmpb	$120, %dl
	je	.L3
	movslq	%ecx, %rsi
	addq	$1, %rax
	addl	$1, %ecx
	movb	%dl, 300000(%rsp,%rsi)
	cmpq	%rbp, %rax
	jb	.L5
.L2:
	leaq	300000(%rsp), %rbx
	movslq	%ecx, %rcx
	movq	%rbx, %rdi
	movb	$0, 300000(%rsp,%rcx)
	call	strlen@PLT
	movq	%rbx, %rdx
	movq	%rax, %rdi
	leaq	(%rbx,%rax), %rcx
	shrq	%rdi
	addq	%rbx, %rdi
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L8:
	movzbl	(%rdx), %esi
	movzbl	-1(%rcx), %eax
	addq	$1, %rdx
	subq	$1, %rcx
	cmpb	%al, %sil
	jne	.L21
.L6:
	cmpq	%rdi, %rdx
	jne	.L8
	movl	%ebp, %ecx
	cmpq	$1, %rbp
	jbe	.L15
	xorl	%edx, %edx
	xorl	%r8d, %r8d
	jmp	.L12
	.p2align 4,,10
	.p2align 3
.L23:
	addl	$1, %r8d
	cmpb	$120, %sil
	je	.L22
	movl	%edi, %ecx
.L11:
	movl	%ecx, %eax
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jge	.L9
.L12:
	movslq	%edx, %rax
	leal	-1(%rcx), %edi
	movzbl	(%rsp,%rax), %esi
	movl	%edi, %eax
	subl	%edx, %eax
	cltq
	cmpb	(%rsp,%rax), %sil
	jne	.L23
	movl	%ecx, %eax
	addl	$1, %edx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jl	.L12
.L9:
	movl	%r8d, %edx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L7:
	movq	600008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L24
	addq	$600024, %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
.L3:
	.cfi_restore_state
	addq	$1, %rax
	cmpq	%rbp, %rax
	jb	.L5
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L22:
	addl	$1, %ecx
	addl	$1, %edx
	jmp	.L11
.L21:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L7
.L15:
	xorl	%r8d, %r8d
	jmp	.L9
.L14:
	xorl	%ecx, %ecx
	jmp	.L2
.L24:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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	"-1"
.LC2:
	.string	"%d\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	leaq	-598016(%rsp), %r11
	.cfi_def_cfa 11, 598040
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$2008, %rsp
	.cfi_def_cfa_offset 600048
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 600008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movq	%rax, %rbp
	testq	%rax, %rax
	je	.L14
	xorl	%eax, %eax
	xorl	%ecx, %ecx
	.p2align 4,,10
	.p2align 3
.L5:
	movzbl	(%rbx,%rax), %edx
	cmpb	$120, %dl
	je	.L3
	movslq	%ecx, %rsi
	addq	$1, %rax
	addl	$1, %ecx
	movb	%dl, 300000(%rsp,%rsi)
	cmpq	%rbp, %rax
	jb	.L5
.L2:
	leaq	300000(%rsp), %rbx
	movslq	%ecx, %rcx
	movq	%rbx, %rdi
	movb	$0, 300000(%rsp,%rcx)
	call	strlen@PLT
	movq	%rbx, %rdx
	movq	%rax, %rdi
	leaq	(%rbx,%rax), %rcx
	shrq	%rdi
	addq	%rbx, %rdi
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L8:
	movzbl	(%rdx), %esi
	movzbl	-1(%rcx), %eax
	addq	$1, %rdx
	subq	$1, %rcx
	cmpb	%al, %sil
	jne	.L21
.L6:
	cmpq	%rdi, %rdx
	jne	.L8
	movl	%ebp, %ecx
	cmpq	$1, %rbp
	jbe	.L15
	xorl	%edx, %edx
	xorl	%r8d, %r8d
	jmp	.L12
	.p2align 4,,10
	.p2align 3
.L23:
	addl	$1, %r8d
	cmpb	$120, %sil
	je	.L22
	movl	%edi, %ecx
.L11:
	movl	%ecx, %eax
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jge	.L9
.L12:
	movslq	%edx, %rax
	leal	-1(%rcx), %edi
	movzbl	(%rsp,%rax), %esi
	movl	%edi, %eax
	subl	%edx, %eax
	cltq
	cmpb	(%rsp,%rax), %sil
	jne	.L23
	movl	%ecx, %eax
	addl	$1, %edx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jl	.L12
.L9:
	movl	%r8d, %edx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L7:
	movq	600008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L24
	addq	$600024, %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
.L3:
	.cfi_restore_state
	addq	$1, %rax
	cmpq	%rbp, %rax
	jb	.L5
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L22:
	addl	$1, %ecx
	addl	$1, %edx
	jmp	.L11
.L21:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L7
.L15:
	xorl	%r8d, %r8d
	jmp	.L9
.L14:
	xorl	%ecx, %ecx
	jmp	.L2
.L24:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#include <limits.h>

int main(void){
    int count=0,ans=0;
    char s[300000],t[300000];
    scanf("%s",s);
    for (int i=0; i<strlen(s); i++){
        if (s[i]!='x'){
            t[count]=s[i];
            count++;
        }
    }
    t[count]='\0';
    for (int i=0; i<strlen(t)/2; i++){
        if (t[i]!=t[strlen(t)-1-i]){
            printf("-1\n");
            return 0;
        }
    }
    int n=strlen(s);
    for (int i=0; i<n/2; i++){
        if (s[i]!=s[n-1-i]){
            if (s[i]=='x'){
                ans++;
                n++;
            } else {
                ans++;
                n--;
                i--;
            }
        }
    }
    printf("%d\n",ans);
	return 0 ;
}```
Given the following C code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#include <limits.h>

int main(void){
    int count=0,ans=0;
    char s[300000],t[300000];
    scanf("%s",s);
    for (int i=0; i<strlen(s); i++){
        if (s[i]!='x'){
            t[count]=s[i];
            count++;
        }
    }
    t[count]='\0';
    for (int i=0; i<strlen(t)/2; i++){
        if (t[i]!=t[strlen(t)-1-i]){
            printf("-1\n");
            return 0;
        }
    }
    int n=strlen(s);
    for (int i=0; i<n/2; i++){
        if (s[i]!=s[n-1-i]){
            if (s[i]=='x'){
                ans++;
                n++;
            } else {
                ans++;
                n--;
                i--;
            }
        }
    }
    printf("%d\n",ans);
	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:

b
 axbax
 `b
 xxxo
 tpxt
 c
 bxbax
 b`
 yxxo
 d

0
 2
 -1
 3
 1
 0
 -1
 -1
 -1
 0

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>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#include <limits.h>

int main(void){
    int count=0,ans=0;
    char s[300000],t[300000];
    scanf("%s",s);
    for (int i=0; i<strlen(s); i++){
        if (s[i]!='x'){
            t[count]=s[i];
            count++;
        }
    }
    t[count]='\0';
    for (int i=0; i<strlen(t)/2; i++){
        if (t[i]!=t[strlen(t)-1-i]){
            printf("-1\n");
            return 0;
        }
    }
    int n=strlen(s);
    for (int i=0; i<n/2; i++){
        if (s[i]!=s[n-1-i]){
            if (s[i]=='x'){
                ans++;
                n++;
            } else {
                ans++;
                n--;
                i--;
            }
        }
    }
    printf("%d\n",ans);
	return 0 ;
}```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"-1"
.LC2:
	.string	"%d\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	leaq	-598016(%rsp), %r11
	.cfi_def_cfa 11, 598040
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$2008, %rsp
	.cfi_def_cfa_offset 600048
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 600008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movq	%rax, %rbp
	testq	%rax, %rax
	je	.L14
	xorl	%eax, %eax
	xorl	%ecx, %ecx
	.p2align 4,,10
	.p2align 3
.L5:
	movzbl	(%rbx,%rax), %edx
	cmpb	$120, %dl
	je	.L3
	movslq	%ecx, %rsi
	addq	$1, %rax
	addl	$1, %ecx
	movb	%dl, 300000(%rsp,%rsi)
	cmpq	%rbp, %rax
	jb	.L5
.L2:
	leaq	300000(%rsp), %rbx
	movslq	%ecx, %rcx
	movq	%rbx, %rdi
	movb	$0, 300000(%rsp,%rcx)
	call	strlen@PLT
	movq	%rbx, %rdx
	movq	%rax, %rdi
	leaq	(%rbx,%rax), %rcx
	shrq	%rdi
	addq	%rbx, %rdi
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L8:
	movzbl	(%rdx), %esi
	movzbl	-1(%rcx), %eax
	addq	$1, %rdx
	subq	$1, %rcx
	cmpb	%al, %sil
	jne	.L21
.L6:
	cmpq	%rdi, %rdx
	jne	.L8
	movl	%ebp, %ecx
	cmpq	$1, %rbp
	jbe	.L15
	xorl	%edx, %edx
	xorl	%r8d, %r8d
	jmp	.L12
	.p2align 4,,10
	.p2align 3
.L23:
	addl	$1, %r8d
	cmpb	$120, %sil
	je	.L22
	movl	%edi, %ecx
.L11:
	movl	%ecx, %eax
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jge	.L9
.L12:
	movslq	%edx, %rax
	leal	-1(%rcx), %edi
	movzbl	(%rsp,%rax), %esi
	movl	%edi, %eax
	subl	%edx, %eax
	cltq
	cmpb	(%rsp,%rax), %sil
	jne	.L23
	movl	%ecx, %eax
	addl	$1, %edx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jl	.L12
.L9:
	movl	%r8d, %edx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L7:
	movq	600008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L24
	addq	$600024, %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
.L3:
	.cfi_restore_state
	addq	$1, %rax
	cmpq	%rbp, %rax
	jb	.L5
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L22:
	addl	$1, %ecx
	addl	$1, %edx
	jmp	.L11
.L21:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L7
.L15:
	xorl	%r8d, %r8d
	jmp	.L9
.L14:
	xorl	%ecx, %ecx
	jmp	.L2
.L24:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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	"-1"
.LC2:
	.string	"%d\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	leaq	-598016(%rsp), %r11
	.cfi_def_cfa 11, 598040
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$2008, %rsp
	.cfi_def_cfa_offset 600048
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 600008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movq	%rax, %rbp
	testq	%rax, %rax
	je	.L14
	xorl	%eax, %eax
	xorl	%ecx, %ecx
	.p2align 4,,10
	.p2align 3
.L5:
	movzbl	(%rbx,%rax), %edx
	cmpb	$120, %dl
	je	.L3
	movslq	%ecx, %rsi
	addq	$1, %rax
	addl	$1, %ecx
	movb	%dl, 300000(%rsp,%rsi)
	cmpq	%rbp, %rax
	jb	.L5
.L2:
	leaq	300000(%rsp), %rbx
	movslq	%ecx, %rcx
	movq	%rbx, %rdi
	movb	$0, 300000(%rsp,%rcx)
	call	strlen@PLT
	movq	%rbx, %rdx
	movq	%rax, %rdi
	leaq	(%rbx,%rax), %rcx
	shrq	%rdi
	addq	%rbx, %rdi
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L8:
	movzbl	(%rdx), %esi
	movzbl	-1(%rcx), %eax
	addq	$1, %rdx
	subq	$1, %rcx
	cmpb	%al, %sil
	jne	.L21
.L6:
	cmpq	%rdi, %rdx
	jne	.L8
	movl	%ebp, %ecx
	cmpq	$1, %rbp
	jbe	.L15
	xorl	%edx, %edx
	xorl	%r8d, %r8d
	jmp	.L12
	.p2align 4,,10
	.p2align 3
.L23:
	addl	$1, %r8d
	cmpb	$120, %sil
	je	.L22
	movl	%edi, %ecx
.L11:
	movl	%ecx, %eax
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jge	.L9
.L12:
	movslq	%edx, %rax
	leal	-1(%rcx), %edi
	movzbl	(%rsp,%rax), %esi
	movl	%edi, %eax
	subl	%edx, %eax
	cltq
	cmpb	(%rsp,%rax), %sil
	jne	.L23
	movl	%ecx, %eax
	addl	$1, %edx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	cmpl	%eax, %edx
	jl	.L12
.L9:
	movl	%r8d, %edx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L7:
	movq	600008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L24
	addq	$600024, %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
.L3:
	.cfi_restore_state
	addq	$1, %rax
	cmpq	%rbp, %rax
	jb	.L5
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L22:
	addl	$1, %ecx
	addl	$1, %edx
	jmp	.L11
.L21:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L7
.L15:
	xorl	%r8d, %r8d
	jmp	.L9
.L14:
	xorl	%ecx, %ecx
	jmp	.L2
.L24:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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:
```