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 <string.h>

int main (){
  
  int len;
  char str[50];
  
  scanf("%s",str);
  
  len = strlen(str);
  
  if(str[0]=='x' && str[len-1]=='x')printf("x\n");
  else printf("o\n");
  
  return 0;
  
}```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"x"
.LC2:
	.string	"o"
	.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
	subq	$64, %rsp
	.cfi_def_cfa_offset 80
	movq	%fs:40, %rax
	movq	%rax, 56(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbp, %rdi
	call	strlen@PLT
	cmpb	$120, (%rsp)
	jne	.L2
	subl	$1, %eax
	cltq
	cmpb	$120, (%rsp,%rax)
	je	.L7
.L2:
	leaq	.LC2(%rip), %rdi
	call	puts@PLT
.L3:
	movq	56(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L8
	addq	$64, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L7:
	.cfi_restore_state
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L3
.L8:
	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:
```

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	"x"
.LC2:
	.string	"o"
	.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
	subq	$64, %rsp
	.cfi_def_cfa_offset 80
	movq	%fs:40, %rax
	movq	%rax, 56(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbp, %rdi
	call	strlen@PLT
	cmpb	$120, (%rsp)
	jne	.L2
	subl	$1, %eax
	cltq
	cmpb	$120, (%rsp,%rax)
	je	.L7
.L2:
	leaq	.LC2(%rip), %rdi
	call	puts@PLT
.L3:
	movq	56(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L8
	addq	$64, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L7:
	.cfi_restore_state
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L3
.L8:
	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
```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"x"
.LC2:
	.string	"o"
	.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
	subq	$64, %rsp
	.cfi_def_cfa_offset 80
	movq	%fs:40, %rax
	movq	%rax, 56(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbp, %rdi
	call	strlen@PLT
	cmpb	$120, (%rsp)
	jne	.L2
	subl	$1, %eax
	cltq
	cmpb	$120, (%rsp,%rax)
	je	.L7
.L2:
	leaq	.LC2(%rip), %rdi
	call	puts@PLT
.L3:
	movq	56(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L8
	addq	$64, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L7:
	.cfi_restore_state
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L3
.L8:
	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:
```
```c
#include <stdio.h>
#include <string.h>

int main (){
  
  int len;
  char str[50];
  
  scanf("%s",str);
  
  len = strlen(str);
  
  if(str[0]=='x' && str[len-1]=='x')printf("x\n");
  else printf("o\n");
  
  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 <string.h>

int main (){
  
  int len;
  char str[50];
  
  scanf("%s",str);
  
  len = strlen(str);
  
  if(str[0]=='x' && str[len-1]=='x')printf("x\n");
  else printf("o\n");
  
  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>
#include <string.h>

int main (){
  
  int len;
  char str[50];
  
  scanf("%s",str);
  
  len = strlen(str);
  
  if(str[0]=='x' && str[len-1]=='x')printf("x\n");
  else printf("o\n");
  
  return 0;
  
}```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"x"
.LC2:
	.string	"o"
	.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
	subq	$64, %rsp
	.cfi_def_cfa_offset 80
	movq	%fs:40, %rax
	movq	%rax, 56(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbp, %rdi
	call	strlen@PLT
	cmpb	$120, (%rsp)
	jne	.L2
	subl	$1, %eax
	cltq
	cmpb	$120, (%rsp,%rax)
	je	.L7
.L2:
	leaq	.LC2(%rip), %rdi
	call	puts@PLT
.L3:
	movq	56(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L8
	addq	$64, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L7:
	.cfi_restore_state
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L3
.L8:
	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:
```

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	"x"
.LC2:
	.string	"o"
	.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
	subq	$64, %rsp
	.cfi_def_cfa_offset 80
	movq	%fs:40, %rax
	movq	%rax, 56(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbp, %rdi
	call	strlen@PLT
	cmpb	$120, (%rsp)
	jne	.L2
	subl	$1, %eax
	cltq
	cmpb	$120, (%rsp,%rax)
	je	.L7
.L2:
	leaq	.LC2(%rip), %rdi
	call	puts@PLT
.L3:
	movq	56(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L8
	addq	$64, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L7:
	.cfi_restore_state
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L3
.L8:
	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:
```