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>
int main () {
  int n, i, x = 1;
  int a[100001];
  scanf ("%d", &n);
  for (i = 1; i < n+1; ++i) {
    scanf ("%d", &a[i]);
  }
  int counter = 0;
  while (x != 2 && counter <= n) {
    x = a[x];
    counter += 1;
  }
  if (counter > n) {
    printf ("-1\n");
  } else {
    printf ("%d\n", counter);
  }
  return 0;
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%d"
.LC1:
	.string	"-1"
.LC2:
	.string	"%d\n"
	.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
	leaq	-397312(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$2720, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$1, -400024(%rbp)
	leaq	-400032(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	$1, -400028(%rbp)
	jmp	.L2
.L3:
	leaq	-400016(%rbp), %rdx
	movl	-400028(%rbp), %eax
	cltq
	salq	$2, %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	addl	$1, -400028(%rbp)
.L2:
	movl	-400032(%rbp), %eax
	cmpl	%eax, -400028(%rbp)
	jle	.L3
	movl	$0, -400020(%rbp)
	jmp	.L4
.L6:
	movl	-400024(%rbp), %eax
	cltq
	movl	-400016(%rbp,%rax,4), %eax
	movl	%eax, -400024(%rbp)
	addl	$1, -400020(%rbp)
.L4:
	cmpl	$2, -400024(%rbp)
	je	.L5
	movl	-400032(%rbp), %eax
	cmpl	%eax, -400020(%rbp)
	jle	.L6
.L5:
	movl	-400032(%rbp), %eax
	cmpl	%eax, -400020(%rbp)
	jle	.L7
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	call	puts@PLT
	jmp	.L8
.L7:
	movl	-400020(%rbp), %eax
	movl	%eax, %esi
	leaq	.LC2(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
.L8:
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L10
	call	__stack_chk_fail@PLT
.L10:
	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	"%d"
.LC1:
	.string	"-1"
.LC2:
	.string	"%d\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%r12
	.cfi_def_cfa_offset 16
	.cfi_offset 12, -16
	pushq	%rbp
	.cfi_def_cfa_offset 24
	.cfi_offset 6, -24
	pushq	%rbx
	.cfi_def_cfa_offset 32
	.cfi_offset 3, -32
	leaq	-397312(%rsp), %r11
	.cfi_def_cfa 11, 397344
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$2720, %rsp
	.cfi_def_cfa_offset 400064
	leaq	.LC0(%rip), %r12
	movq	%r12, %rdi
	movq	%fs:40, %rax
	movq	%rax, 400024(%rsp)
	xorl	%eax, %eax
	leaq	12(%rsp), %rsi
	call	__isoc99_scanf@PLT
	movl	12(%rsp), %ecx
	testl	%ecx, %ecx
	jle	.L2
	leaq	20(%rsp), %rbp
	movl	$1, %ebx
	.p2align 4,,10
	.p2align 3
.L3:
	movq	%rbp, %rsi
	movq	%r12, %rdi
	xorl	%eax, %eax
	addl	$1, %ebx
	call	__isoc99_scanf@PLT
	movl	12(%rsp), %ecx
	addq	$4, %rbp
	cmpl	%ebx, %ecx
	jge	.L3
.L2:
	xorl	%edx, %edx
	movl	$1, %eax
	.p2align 4,,10
	.p2align 3
.L4:
	cmpl	%edx, %ecx
	jl	.L7
	movslq	16(%rsp,%rax,4), %rax
	addl	$1, %edx
	cmpl	$2, %eax
	jne	.L4
	cmpl	%ecx, %edx
	jg	.L7
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L9:
	movq	400024(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L14
	addq	$400032, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 32
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 24
	popq	%rbp
	.cfi_def_cfa_offset 16
	popq	%r12
	.cfi_def_cfa_offset 8
	ret
.L7:
	.cfi_restore_state
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L9
.L14:
	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
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%d"
.LC1:
	.string	"-1"
.LC2:
	.string	"%d\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%r12
	.cfi_def_cfa_offset 16
	.cfi_offset 12, -16
	pushq	%rbp
	.cfi_def_cfa_offset 24
	.cfi_offset 6, -24
	pushq	%rbx
	.cfi_def_cfa_offset 32
	.cfi_offset 3, -32
	leaq	-397312(%rsp), %r11
	.cfi_def_cfa 11, 397344
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$2720, %rsp
	.cfi_def_cfa_offset 400064
	leaq	.LC0(%rip), %r12
	movq	%r12, %rdi
	movq	%fs:40, %rax
	movq	%rax, 400024(%rsp)
	xorl	%eax, %eax
	leaq	12(%rsp), %rsi
	call	__isoc99_scanf@PLT
	movl	12(%rsp), %ecx
	testl	%ecx, %ecx
	jle	.L2
	leaq	20(%rsp), %rbp
	movl	$1, %ebx
	.p2align 4,,10
	.p2align 3
.L3:
	movq	%rbp, %rsi
	movq	%r12, %rdi
	xorl	%eax, %eax
	addl	$1, %ebx
	call	__isoc99_scanf@PLT
	movl	12(%rsp), %ecx
	addq	$4, %rbp
	cmpl	%ebx, %ecx
	jge	.L3
.L2:
	xorl	%edx, %edx
	movl	$1, %eax
	.p2align 4,,10
	.p2align 3
.L4:
	cmpl	%edx, %ecx
	jl	.L7
	movslq	16(%rsp,%rax,4), %rax
	addl	$1, %edx
	cmpl	$2, %eax
	jne	.L4
	cmpl	%ecx, %edx
	jg	.L7
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L9:
	movq	400024(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L14
	addq	$400032, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 32
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 24
	popq	%rbp
	.cfi_def_cfa_offset 16
	popq	%r12
	.cfi_def_cfa_offset 8
	ret
.L7:
	.cfi_restore_state
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L9
.L14:
	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:

#include <stdio.h>
int main () {
  int n, i, x = 1;
  int a[100001];
  scanf ("%d", &n);
  for (i = 1; i < n+1; ++i) {
    scanf ("%d", &a[i]);
  }
  int counter = 0;
  while (x != 2 && counter <= n) {
    x = a[x];
    counter += 1;
  }
  if (counter > n) {
    printf ("-1\n");
  } else {
    printf ("%d\n", counter);
  }
  return 0;
}
3
3
1
3
 5
3
3
5
2
4
 4
4
3
1
2
 3
2
2
1
 5
3
0
4
2
4
 4
3
3
1
2
 3
3
2
3
 4
4
3
0
2
 4
4
4
0
2
 4
4
7
0
2

-1
 4
 2
 1
 3
 -1
 -1
 2
 2
 2

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>
int main () {
  int n, i, x = 1;
  int a[100001];
  scanf ("%d", &n);
  for (i = 1; i < n+1; ++i) {
    scanf ("%d", &a[i]);
  }
  int counter = 0;
  while (x != 2 && counter <= n) {
    x = a[x];
    counter += 1;
  }
  if (counter > n) {
    printf ("-1\n");
  } else {
    printf ("%d\n", counter);
  }
  return 0;
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%d"
.LC1:
	.string	"-1"
.LC2:
	.string	"%d\n"
	.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
	leaq	-397312(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$2720, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$1, -400024(%rbp)
	leaq	-400032(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	$1, -400028(%rbp)
	jmp	.L2
.L3:
	leaq	-400016(%rbp), %rdx
	movl	-400028(%rbp), %eax
	cltq
	salq	$2, %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	addl	$1, -400028(%rbp)
.L2:
	movl	-400032(%rbp), %eax
	cmpl	%eax, -400028(%rbp)
	jle	.L3
	movl	$0, -400020(%rbp)
	jmp	.L4
.L6:
	movl	-400024(%rbp), %eax
	cltq
	movl	-400016(%rbp,%rax,4), %eax
	movl	%eax, -400024(%rbp)
	addl	$1, -400020(%rbp)
.L4:
	cmpl	$2, -400024(%rbp)
	je	.L5
	movl	-400032(%rbp), %eax
	cmpl	%eax, -400020(%rbp)
	jle	.L6
.L5:
	movl	-400032(%rbp), %eax
	cmpl	%eax, -400020(%rbp)
	jle	.L7
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	call	puts@PLT
	jmp	.L8
.L7:
	movl	-400020(%rbp), %eax
	movl	%eax, %esi
	leaq	.LC2(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
.L8:
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L10
	call	__stack_chk_fail@PLT
.L10:
	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	"%d"
.LC1:
	.string	"-1"
.LC2:
	.string	"%d\n"
	.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
	leaq	-397312(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$2720, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$1, -400024(%rbp)
	leaq	-400032(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	$1, -400028(%rbp)
	jmp	.L2
.L3:
	leaq	-400016(%rbp), %rdx
	movl	-400028(%rbp), %eax
	cltq
	salq	$2, %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	addl	$1, -400028(%rbp)
.L2:
	movl	-400032(%rbp), %eax
	cmpl	%eax, -400028(%rbp)
	jle	.L3
	movl	$0, -400020(%rbp)
	jmp	.L4
.L6:
	movl	-400024(%rbp), %eax
	cltq
	movl	-400016(%rbp,%rax,4), %eax
	movl	%eax, -400024(%rbp)
	addl	$1, -400020(%rbp)
.L4:
	cmpl	$2, -400024(%rbp)
	je	.L5
	movl	-400032(%rbp), %eax
	cmpl	%eax, -400020(%rbp)
	jle	.L6
.L5:
	movl	-400032(%rbp), %eax
	cmpl	%eax, -400020(%rbp)
	jle	.L7
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	call	puts@PLT
	jmp	.L8
.L7:
	movl	-400020(%rbp), %eax
	movl	%eax, %esi
	leaq	.LC2(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
.L8:
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L10
	call	__stack_chk_fail@PLT
.L10:
	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:
