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>
#define df 0


int main(){
  int n;
  scanf("%d",&n);
  int i,a[n+1];
  for(i=0;i<n;i++)
  scanf("%d",&a[i+1]);
  int count=0;
  for(i=1;i<=n;i++)
  if(a[a[i]]==i)count++;

  printf("%d",count/2);
  return 0;
}


/// confirm df==0 ///
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%d"
	.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
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r14
	.cfi_offset 14, -24
	leaq	.LC0(%rip), %r14
	pushq	%r13
	leaq	-44(%rbp), %rsi
	movq	%r14, %rdi
	pushq	%r12
	pushq	%rbx
	subq	$16, %rsp
	.cfi_offset 13, -32
	.cfi_offset 12, -40
	.cfi_offset 3, -48
	movq	%fs:40, %rax
	movq	%rax, -40(%rbp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %ecx
	movq	%rsp, %rsi
	leal	1(%rcx), %eax
	cltq
	leaq	15(,%rax,4), %rax
	movq	%rax, %rdx
	andq	$-4096, %rax
	subq	%rax, %rsi
	andq	$-16, %rdx
	cmpq	%rsi, %rsp
	je	.L3
.L18:
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	cmpq	%rsi, %rsp
	jne	.L18
.L3:
	andl	$4095, %edx
	subq	%rdx, %rsp
	testq	%rdx, %rdx
	jne	.L19
.L4:
	movq	%rsp, %r13
	testl	%ecx, %ecx
	jle	.L5
	leaq	4(%r13), %r12
	xorl	%ebx, %ebx
	.p2align 4,,10
	.p2align 3
.L6:
	movq	%r12, %rsi
	movq	%r14, %rdi
	xorl	%eax, %eax
	addl	$1, %ebx
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %eax
	addq	$4, %r12
	cmpl	%eax, %ebx
	jl	.L6
	testl	%eax, %eax
	jle	.L5
	leal	1(%rax), %esi
	xorl	%edx, %edx
	movl	$1, %eax
	.p2align 4,,10
	.p2align 3
.L8:
	movslq	0(%r13,%rax,4), %rcx
	cmpl	%eax, 0(%r13,%rcx,4)
	jne	.L7
	addl	$1, %edx
.L7:
	addq	$1, %rax
	cmpq	%rax, %rsi
	jne	.L8
.L9:
	sarl	%edx
	xorl	%eax, %eax
	movq	%r14, %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	-40(%rbp), %rax
	subq	%fs:40, %rax
	jne	.L20
	leaq	-32(%rbp), %rsp
	xorl	%eax, %eax
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%rbp
	.cfi_remember_state
	.cfi_def_cfa 7, 8
	ret
.L19:
	.cfi_restore_state
	orq	$0, -8(%rsp,%rdx)
	jmp	.L4
.L5:
	xorl	%edx, %edx
	jmp	.L9
.L20:
	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	"%d"
	.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
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r14
	.cfi_offset 14, -24
	leaq	.LC0(%rip), %r14
	pushq	%r13
	leaq	-44(%rbp), %rsi
	movq	%r14, %rdi
	pushq	%r12
	pushq	%rbx
	subq	$16, %rsp
	.cfi_offset 13, -32
	.cfi_offset 12, -40
	.cfi_offset 3, -48
	movq	%fs:40, %rax
	movq	%rax, -40(%rbp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %ecx
	movq	%rsp, %rsi
	leal	1(%rcx), %eax
	cltq
	leaq	15(,%rax,4), %rax
	movq	%rax, %rdx
	andq	$-4096, %rax
	subq	%rax, %rsi
	andq	$-16, %rdx
	cmpq	%rsi, %rsp
	je	.L3
.L18:
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	cmpq	%rsi, %rsp
	jne	.L18
.L3:
	andl	$4095, %edx
	subq	%rdx, %rsp
	testq	%rdx, %rdx
	jne	.L19
.L4:
	movq	%rsp, %r13
	testl	%ecx, %ecx
	jle	.L5
	leaq	4(%r13), %r12
	xorl	%ebx, %ebx
	.p2align 4,,10
	.p2align 3
.L6:
	movq	%r12, %rsi
	movq	%r14, %rdi
	xorl	%eax, %eax
	addl	$1, %ebx
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %eax
	addq	$4, %r12
	cmpl	%eax, %ebx
	jl	.L6
	testl	%eax, %eax
	jle	.L5
	leal	1(%rax), %esi
	xorl	%edx, %edx
	movl	$1, %eax
	.p2align 4,,10
	.p2align 3
.L8:
	movslq	0(%r13,%rax,4), %rcx
	cmpl	%eax, 0(%r13,%rcx,4)
	jne	.L7
	addl	$1, %edx
.L7:
	addq	$1, %rax
	cmpq	%rax, %rsi
	jne	.L8
.L9:
	sarl	%edx
	xorl	%eax, %eax
	movq	%r14, %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	-40(%rbp), %rax
	subq	%fs:40, %rax
	jne	.L20
	leaq	-32(%rbp), %rsp
	xorl	%eax, %eax
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%rbp
	.cfi_remember_state
	.cfi_def_cfa 7, 8
	ret
.L19:
	.cfi_restore_state
	orq	$0, -8(%rsp,%rdx)
	jmp	.L4
.L5:
	xorl	%edx, %edx
	jmp	.L9
.L20:
	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	"%d"
	.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
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r14
	.cfi_offset 14, -24
	leaq	.LC0(%rip), %r14
	pushq	%r13
	leaq	-44(%rbp), %rsi
	movq	%r14, %rdi
	pushq	%r12
	pushq	%rbx
	subq	$16, %rsp
	.cfi_offset 13, -32
	.cfi_offset 12, -40
	.cfi_offset 3, -48
	movq	%fs:40, %rax
	movq	%rax, -40(%rbp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %ecx
	movq	%rsp, %rsi
	leal	1(%rcx), %eax
	cltq
	leaq	15(,%rax,4), %rax
	movq	%rax, %rdx
	andq	$-4096, %rax
	subq	%rax, %rsi
	andq	$-16, %rdx
	cmpq	%rsi, %rsp
	je	.L3
.L18:
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	cmpq	%rsi, %rsp
	jne	.L18
.L3:
	andl	$4095, %edx
	subq	%rdx, %rsp
	testq	%rdx, %rdx
	jne	.L19
.L4:
	movq	%rsp, %r13
	testl	%ecx, %ecx
	jle	.L5
	leaq	4(%r13), %r12
	xorl	%ebx, %ebx
	.p2align 4,,10
	.p2align 3
.L6:
	movq	%r12, %rsi
	movq	%r14, %rdi
	xorl	%eax, %eax
	addl	$1, %ebx
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %eax
	addq	$4, %r12
	cmpl	%eax, %ebx
	jl	.L6
	testl	%eax, %eax
	jle	.L5
	leal	1(%rax), %esi
	xorl	%edx, %edx
	movl	$1, %eax
	.p2align 4,,10
	.p2align 3
.L8:
	movslq	0(%r13,%rax,4), %rcx
	cmpl	%eax, 0(%r13,%rcx,4)
	jne	.L7
	addl	$1, %edx
.L7:
	addq	$1, %rax
	cmpq	%rax, %rsi
	jne	.L8
.L9:
	sarl	%edx
	xorl	%eax, %eax
	movq	%r14, %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	-40(%rbp), %rax
	subq	%fs:40, %rax
	jne	.L20
	leaq	-32(%rbp), %rsp
	xorl	%eax, %eax
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%rbp
	.cfi_remember_state
	.cfi_def_cfa 7, 8
	ret
.L19:
	.cfi_restore_state
	orq	$0, -8(%rsp,%rdx)
	jmp	.L4
.L5:
	xorl	%edx, %edx
	jmp	.L9
.L20:
	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>
#define df 0


int main(){
  int n;
  scanf("%d",&n);
  int i,a[n+1];
  for(i=0;i<n;i++)
  scanf("%d",&a[i+1]);
  int count=0;
  for(i=1;i<=n;i++)
  if(a[a[i]]==i)count++;

  printf("%d",count/2);
  return 0;
}


/// confirm df==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>
#define df 0


int main(){
  int n;
  scanf("%d",&n);
  int i,a[n+1];
  for(i=0;i<n;i++)
  scanf("%d",&a[i+1]);
  int count=0;
  for(i=1;i<=n;i++)
  if(a[a[i]]==i)count++;

  printf("%d",count/2);
  return 0;
}


/// confirm df==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:

3
3 3 1
 5
3 5 5 5 1
 5
5 4 5 2 1
 5
5 5 5 5 2
 5
5 5 5 1 1
 4
3 1 4 3
 5
5 3 5 1 1
 4
4 1 4 3
 5
5 3 5 2 1
 5
5 5 5 2 1

1 0 2 1 1 1 1 1 1 1
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>
#define df 0


int main(){
  int n;
  scanf("%d",&n);
  int i,a[n+1];
  for(i=0;i<n;i++)
  scanf("%d",&a[i+1]);
  int count=0;
  for(i=1;i<=n;i++)
  if(a[a[i]]==i)count++;

  printf("%d",count/2);
  return 0;
}


/// confirm df==0 ///
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%d"
	.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
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r14
	.cfi_offset 14, -24
	leaq	.LC0(%rip), %r14
	pushq	%r13
	leaq	-44(%rbp), %rsi
	movq	%r14, %rdi
	pushq	%r12
	pushq	%rbx
	subq	$16, %rsp
	.cfi_offset 13, -32
	.cfi_offset 12, -40
	.cfi_offset 3, -48
	movq	%fs:40, %rax
	movq	%rax, -40(%rbp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %ecx
	movq	%rsp, %rsi
	leal	1(%rcx), %eax
	cltq
	leaq	15(,%rax,4), %rax
	movq	%rax, %rdx
	andq	$-4096, %rax
	subq	%rax, %rsi
	andq	$-16, %rdx
	cmpq	%rsi, %rsp
	je	.L3
.L18:
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	cmpq	%rsi, %rsp
	jne	.L18
.L3:
	andl	$4095, %edx
	subq	%rdx, %rsp
	testq	%rdx, %rdx
	jne	.L19
.L4:
	movq	%rsp, %r13
	testl	%ecx, %ecx
	jle	.L5
	leaq	4(%r13), %r12
	xorl	%ebx, %ebx
	.p2align 4,,10
	.p2align 3
.L6:
	movq	%r12, %rsi
	movq	%r14, %rdi
	xorl	%eax, %eax
	addl	$1, %ebx
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %eax
	addq	$4, %r12
	cmpl	%eax, %ebx
	jl	.L6
	testl	%eax, %eax
	jle	.L5
	leal	1(%rax), %esi
	xorl	%edx, %edx
	movl	$1, %eax
	.p2align 4,,10
	.p2align 3
.L8:
	movslq	0(%r13,%rax,4), %rcx
	cmpl	%eax, 0(%r13,%rcx,4)
	jne	.L7
	addl	$1, %edx
.L7:
	addq	$1, %rax
	cmpq	%rax, %rsi
	jne	.L8
.L9:
	sarl	%edx
	xorl	%eax, %eax
	movq	%r14, %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	-40(%rbp), %rax
	subq	%fs:40, %rax
	jne	.L20
	leaq	-32(%rbp), %rsp
	xorl	%eax, %eax
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%rbp
	.cfi_remember_state
	.cfi_def_cfa 7, 8
	ret
.L19:
	.cfi_restore_state
	orq	$0, -8(%rsp,%rdx)
	jmp	.L4
.L5:
	xorl	%edx, %edx
	jmp	.L9
.L20:
	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	"%d"
	.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
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r14
	.cfi_offset 14, -24
	leaq	.LC0(%rip), %r14
	pushq	%r13
	leaq	-44(%rbp), %rsi
	movq	%r14, %rdi
	pushq	%r12
	pushq	%rbx
	subq	$16, %rsp
	.cfi_offset 13, -32
	.cfi_offset 12, -40
	.cfi_offset 3, -48
	movq	%fs:40, %rax
	movq	%rax, -40(%rbp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %ecx
	movq	%rsp, %rsi
	leal	1(%rcx), %eax
	cltq
	leaq	15(,%rax,4), %rax
	movq	%rax, %rdx
	andq	$-4096, %rax
	subq	%rax, %rsi
	andq	$-16, %rdx
	cmpq	%rsi, %rsp
	je	.L3
.L18:
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	cmpq	%rsi, %rsp
	jne	.L18
.L3:
	andl	$4095, %edx
	subq	%rdx, %rsp
	testq	%rdx, %rdx
	jne	.L19
.L4:
	movq	%rsp, %r13
	testl	%ecx, %ecx
	jle	.L5
	leaq	4(%r13), %r12
	xorl	%ebx, %ebx
	.p2align 4,,10
	.p2align 3
.L6:
	movq	%r12, %rsi
	movq	%r14, %rdi
	xorl	%eax, %eax
	addl	$1, %ebx
	call	__isoc99_scanf@PLT
	movl	-44(%rbp), %eax
	addq	$4, %r12
	cmpl	%eax, %ebx
	jl	.L6
	testl	%eax, %eax
	jle	.L5
	leal	1(%rax), %esi
	xorl	%edx, %edx
	movl	$1, %eax
	.p2align 4,,10
	.p2align 3
.L8:
	movslq	0(%r13,%rax,4), %rcx
	cmpl	%eax, 0(%r13,%rcx,4)
	jne	.L7
	addl	$1, %edx
.L7:
	addq	$1, %rax
	cmpq	%rax, %rsi
	jne	.L8
.L9:
	sarl	%edx
	xorl	%eax, %eax
	movq	%r14, %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	-40(%rbp), %rax
	subq	%fs:40, %rax
	jne	.L20
	leaq	-32(%rbp), %rsp
	xorl	%eax, %eax
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%rbp
	.cfi_remember_state
	.cfi_def_cfa 7, 8
	ret
.L19:
	.cfi_restore_state
	orq	$0, -8(%rsp,%rdx)
	jmp	.L4
.L5:
	xorl	%edx, %edx
	jmp	.L9
.L20:
	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:
```