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 <stdlib.h>
#include <math.h>

int sort(const void *A,const void *B){return *(long long*)A>*(long long*)B?1:0;}

int main(void){
    int n;
    scanf("%d",&n);
    long long a[n],v[n],ans=0;
    for (int i=0; i<n; i++){
        scanf("%lld",&a[i]);
        v[i]=0;
    }
    qsort (a,n,sizeof(long long),sort);
    for (int i=31; i>=0; i--){
        long long count=0,back=n-1,sum=pow(2,i);
        while(count<back){
            if (v[count]==1){
                count++;
            } else if (v[back]==1){
                back--;
            } else if (a[count]+a[back]==sum){
                v[count]=1;
                v[back]=1;
                ans++;
                count++;
                back--;
            } else if (a[count]+a[back]<sum){
                count++;
            } else {
                back--;
            }
        }
    }
    printf("%lld\n",ans);
	return 0 ;
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.globl	sort
	.type	sort, @function
sort:
.LFB6:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movq	%rdi, -8(%rbp)
	movq	%rsi, -16(%rbp)
	movq	-8(%rbp), %rax
	movq	(%rax), %rdx
	movq	-16(%rbp), %rax
	movq	(%rax), %rax
	cmpq	%rax, %rdx
	setg	%al
	movzbl	%al, %eax
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE6:
	.size	sort, .-sort
	.section	.rodata
.LC0:
	.string	"%d"
.LC1:
	.string	"%lld"
.LC3:
	.string	"%lld\n"
	.text
	.globl	main
	.type	main, @function
main:
.LFB7:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r15
	pushq	%r14
	pushq	%r13
	pushq	%r12
	pushq	%rbx
	subq	$136, %rsp
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	movq	%rsp, %rax
	movq	%rax, %rbx
	leaq	-132(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-132(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -96(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -160(%rbp)
	movq	$0, -152(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -176(%rbp)
	movq	$0, -168(%rbp)
	cltq
	leaq	0(,%rax,8), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %edi
	movl	$0, %edx
	divq	%rdi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L4:
	cmpq	%rdx, %rsp
	je	.L5
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L4
.L5:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L6
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L6:
	movq	%rsp, %rax
	addq	$7, %rax
	shrq	$3, %rax
	salq	$3, %rax
	movq	%rax, -88(%rbp)
	movl	-132(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -80(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, %r14
	movl	$0, %r15d
	movslq	%eax, %rdx
	movq	%rdx, %r12
	movl	$0, %r13d
	cltq
	leaq	0(,%rax,8), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %esi
	movl	$0, %edx
	divq	%rsi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L7:
	cmpq	%rdx, %rsp
	je	.L8
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L7
.L8:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L9
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L9:
	movq	%rsp, %rax
	addq	$7, %rax
	shrq	$3, %rax
	salq	$3, %rax
	movq	%rax, -72(%rbp)
	movq	$0, -120(%rbp)
	movl	$0, -128(%rbp)
	jmp	.L10
.L11:
	movl	-128(%rbp), %eax
	cltq
	leaq	0(,%rax,8), %rdx
	movq	-88(%rbp), %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movq	-72(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movq	$0, (%rax,%rdx,8)
	addl	$1, -128(%rbp)
.L10:
	movl	-132(%rbp), %eax
	cmpl	%eax, -128(%rbp)
	jl	.L11
	movl	-132(%rbp), %eax
	movslq	%eax, %rsi
	movq	-88(%rbp), %rax
	leaq	sort(%rip), %rdx
	movq	%rdx, %rcx
	movl	$8, %edx
	movq	%rax, %rdi
	call	qsort@PLT
	movl	$31, -124(%rbp)
	jmp	.L12
.L19:
	movq	$0, -112(%rbp)
	movl	-132(%rbp), %eax
	subl	$1, %eax
	cltq
	movq	%rax, -104(%rbp)
	pxor	%xmm0, %xmm0
	cvtsi2sdl	-124(%rbp), %xmm0
	movq	.LC2(%rip), %rax
	movapd	%xmm0, %xmm1
	movq	%rax, %xmm0
	call	pow@PLT
	cvttsd2siq	%xmm0, %rax
	movq	%rax, -64(%rbp)
	jmp	.L13
.L18:
	movq	-72(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	cmpq	$1, %rax
	jne	.L14
	addq	$1, -112(%rbp)
	jmp	.L13
.L14:
	movq	-72(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	cmpq	$1, %rax
	jne	.L15
	subq	$1, -104(%rbp)
	jmp	.L13
.L15:
	movq	-88(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	(%rax,%rdx,8), %rcx
	movq	-88(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	addq	%rcx, %rax
	cmpq	%rax, -64(%rbp)
	jne	.L16
	movq	-72(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	$1, (%rax,%rdx,8)
	movq	-72(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	$1, (%rax,%rdx,8)
	addq	$1, -120(%rbp)
	addq	$1, -112(%rbp)
	subq	$1, -104(%rbp)
	jmp	.L13
.L16:
	movq	-88(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	(%rax,%rdx,8), %rcx
	movq	-88(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	addq	%rcx, %rax
	cmpq	%rax, -64(%rbp)
	jle	.L17
	addq	$1, -112(%rbp)
	jmp	.L13
.L17:
	subq	$1, -104(%rbp)
.L13:
	movq	-112(%rbp), %rax
	cmpq	-104(%rbp), %rax
	jl	.L18
	subl	$1, -124(%rbp)
.L12:
	cmpl	$0, -124(%rbp)
	jns	.L19
	movq	-120(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC3(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	%rbx, %rsp
	movq	-56(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L21
	call	__stack_chk_fail@PLT
.L21:
	leaq	-40(%rbp), %rsp
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE7:
	.size	main, .-main
	.section	.rodata
	.align 8
.LC2:
	.long	0
	.long	1073741824
	.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
	.p2align 4
	.globl	sort
	.type	sort, @function
sort:
.LFB39:
	.cfi_startproc
	endbr64
	movq	(%rsi), %rax
	cmpq	%rax, (%rdi)
	setg	%al
	movzbl	%al, %eax
	ret
	.cfi_endproc
.LFE39:
	.size	sort, .-sort
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%d"
.LC1:
	.string	"%lld"
.LC3:
	.string	"%lld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB40:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r15
	pushq	%r14
	leaq	-60(%rbp), %rsi
	pushq	%r13
	pushq	%r12
	pushq	%rbx
	subq	$40, %rsp
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movslq	-60(%rbp), %rsi
	movq	%rsp, %rdi
	leaq	15(,%rsi,8), %rdx
	movq	%rsi, %rax
	movq	%rdx, %r8
	movq	%rdx, %rcx
	andq	$-4096, %r8
	andq	$-16, %rcx
	subq	%r8, %rdi
	cmpq	%rdi, %rsp
	je	.L5
.L32:
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	cmpq	%rdi, %rsp
	jne	.L32
.L5:
	andl	$4095, %ecx
	subq	%rcx, %rsp
	testq	%rcx, %rcx
	jne	.L33
.L6:
	movq	%rdx, %rcx
	movq	%rsp, %rdi
	andq	$-4096, %rdx
	movq	%rsp, %r14
	andq	$-16, %rcx
	subq	%rdx, %rdi
.L7:
	cmpq	%rdi, %rsp
	je	.L8
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L7
.L33:
	orq	$0, -8(%rsp,%rcx)
	jmp	.L6
.L8:
	andl	$4095, %ecx
	subq	%rcx, %rsp
	testq	%rcx, %rcx
	jne	.L34
.L9:
	movq	%rsp, %rbx
	testl	%eax, %eax
	jle	.L10
	movq	%r14, %r13
	xorl	%r12d, %r12d
	leaq	.LC1(%rip), %r15
	.p2align 4,,10
	.p2align 3
.L11:
	movq	%r13, %rsi
	movq	%r15, %rdi
	xorl	%eax, %eax
	addq	$8, %r13
	call	__isoc99_scanf@PLT
	movl	-60(%rbp), %eax
	movq	$0, (%rbx,%r12,8)
	addq	$1, %r12
	cmpl	%r12d, %eax
	jg	.L11
	movslq	%eax, %rsi
.L10:
	leaq	sort(%rip), %rcx
	movl	$8, %edx
	movq	%r14, %rdi
	xorl	%r13d, %r13d
	call	qsort@PLT
	movl	-60(%rbp), %eax
	movl	$31, %r15d
	leal	-1(%rax), %r12d
	movslq	%r12d, %rax
	movq	%rax, -72(%rbp)
	.p2align 4,,10
	.p2align 3
.L19:
	pxor	%xmm1, %xmm1
	movq	.LC2(%rip), %rax
	cvtsi2sdl	%r15d, %xmm1
	movq	%rax, %xmm0
	call	pow@PLT
	cvttsd2siq	%xmm0, %rsi
	testl	%r12d, %r12d
	jle	.L12
	movq	-72(%rbp), %rdx
	xorl	%eax, %eax
	jmp	.L18
	.p2align 4,,10
	.p2align 3
.L13:
	cmpq	$1, (%rbx,%rdx,8)
	je	.L17
	movq	(%r14,%rdx,8), %rcx
	addq	(%r14,%rax,8), %rcx
	cmpq	%rsi, %rcx
	je	.L35
	jl	.L31
.L17:
	subq	$1, %rdx
.L14:
	cmpq	%rax, %rdx
	jle	.L12
.L18:
	cmpq	$1, (%rbx,%rax,8)
	jne	.L13
.L31:
	addq	$1, %rax
	cmpq	%rax, %rdx
	jg	.L18
.L12:
	subl	$1, %r15d
	jnb	.L19
	xorl	%eax, %eax
	movq	%r13, %rdx
	movl	$1, %edi
	leaq	.LC3(%rip), %rsi
	call	__printf_chk@PLT
	movq	-56(%rbp), %rax
	subq	%fs:40, %rax
	jne	.L36
	leaq	-40(%rbp), %rsp
	xorl	%eax, %eax
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.cfi_remember_state
	.cfi_def_cfa 7, 8
	ret
	.p2align 4,,10
	.p2align 3
.L35:
	.cfi_restore_state
	movq	$1, (%rbx,%rax,8)
	addq	$1, %r13
	addq	$1, %rax
	movq	$1, (%rbx,%rdx,8)
	subq	$1, %rdx
	jmp	.L14
.L34:
	orq	$0, -8(%rsp,%rcx)
	jmp	.L9
.L36:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE40:
	.size	main, .-main
	.section	.rodata.cst8,"aM",@progbits,8
	.align 8
.LC2:
	.long	0
	.long	1073741824
	.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
	.p2align 4
	.globl	sort
	.type	sort, @function
sort:
.LFB39:
	.cfi_startproc
	endbr64
	movq	(%rsi), %rax
	cmpq	%rax, (%rdi)
	setg	%al
	movzbl	%al, %eax
	ret
	.cfi_endproc
.LFE39:
	.size	sort, .-sort
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%d"
.LC1:
	.string	"%lld"
.LC3:
	.string	"%lld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB40:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r15
	pushq	%r14
	leaq	-60(%rbp), %rsi
	pushq	%r13
	pushq	%r12
	pushq	%rbx
	subq	$40, %rsp
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movslq	-60(%rbp), %rsi
	movq	%rsp, %rdi
	leaq	15(,%rsi,8), %rdx
	movq	%rsi, %rax
	movq	%rdx, %r8
	movq	%rdx, %rcx
	andq	$-4096, %r8
	andq	$-16, %rcx
	subq	%r8, %rdi
	cmpq	%rdi, %rsp
	je	.L5
.L32:
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	cmpq	%rdi, %rsp
	jne	.L32
.L5:
	andl	$4095, %ecx
	subq	%rcx, %rsp
	testq	%rcx, %rcx
	jne	.L33
.L6:
	movq	%rdx, %rcx
	movq	%rsp, %rdi
	andq	$-4096, %rdx
	movq	%rsp, %r14
	andq	$-16, %rcx
	subq	%rdx, %rdi
.L7:
	cmpq	%rdi, %rsp
	je	.L8
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L7
.L33:
	orq	$0, -8(%rsp,%rcx)
	jmp	.L6
.L8:
	andl	$4095, %ecx
	subq	%rcx, %rsp
	testq	%rcx, %rcx
	jne	.L34
.L9:
	movq	%rsp, %rbx
	testl	%eax, %eax
	jle	.L10
	movq	%r14, %r13
	xorl	%r12d, %r12d
	leaq	.LC1(%rip), %r15
	.p2align 4,,10
	.p2align 3
.L11:
	movq	%r13, %rsi
	movq	%r15, %rdi
	xorl	%eax, %eax
	addq	$8, %r13
	call	__isoc99_scanf@PLT
	movl	-60(%rbp), %eax
	movq	$0, (%rbx,%r12,8)
	addq	$1, %r12
	cmpl	%r12d, %eax
	jg	.L11
	movslq	%eax, %rsi
.L10:
	leaq	sort(%rip), %rcx
	movl	$8, %edx
	movq	%r14, %rdi
	xorl	%r13d, %r13d
	call	qsort@PLT
	movl	-60(%rbp), %eax
	movl	$31, %r15d
	leal	-1(%rax), %r12d
	movslq	%r12d, %rax
	movq	%rax, -72(%rbp)
	.p2align 4,,10
	.p2align 3
.L19:
	pxor	%xmm1, %xmm1
	movq	.LC2(%rip), %rax
	cvtsi2sdl	%r15d, %xmm1
	movq	%rax, %xmm0
	call	pow@PLT
	cvttsd2siq	%xmm0, %rsi
	testl	%r12d, %r12d
	jle	.L12
	movq	-72(%rbp), %rdx
	xorl	%eax, %eax
	jmp	.L18
	.p2align 4,,10
	.p2align 3
.L13:
	cmpq	$1, (%rbx,%rdx,8)
	je	.L17
	movq	(%r14,%rdx,8), %rcx
	addq	(%r14,%rax,8), %rcx
	cmpq	%rsi, %rcx
	je	.L35
	jl	.L31
.L17:
	subq	$1, %rdx
.L14:
	cmpq	%rax, %rdx
	jle	.L12
.L18:
	cmpq	$1, (%rbx,%rax,8)
	jne	.L13
.L31:
	addq	$1, %rax
	cmpq	%rax, %rdx
	jg	.L18
.L12:
	subl	$1, %r15d
	jnb	.L19
	xorl	%eax, %eax
	movq	%r13, %rdx
	movl	$1, %edi
	leaq	.LC3(%rip), %rsi
	call	__printf_chk@PLT
	movq	-56(%rbp), %rax
	subq	%fs:40, %rax
	jne	.L36
	leaq	-40(%rbp), %rsp
	xorl	%eax, %eax
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.cfi_remember_state
	.cfi_def_cfa 7, 8
	ret
	.p2align 4,,10
	.p2align 3
.L35:
	.cfi_restore_state
	movq	$1, (%rbx,%rax,8)
	addq	$1, %r13
	addq	$1, %rax
	movq	$1, (%rbx,%rdx,8)
	subq	$1, %rdx
	jmp	.L14
.L34:
	orq	$0, -8(%rsp,%rcx)
	jmp	.L9
.L36:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE40:
	.size	main, .-main
	.section	.rodata.cst8,"aM",@progbits,8
	.align 8
.LC2:
	.long	0
	.long	1073741824
	.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 <stdlib.h>
#include <math.h>

int sort(const void *A,const void *B){return *(long long*)A>*(long long*)B?1:0;}

int main(void){
    int n;
    scanf("%d",&n);
    long long a[n],v[n],ans=0;
    for (int i=0; i<n; i++){
        scanf("%lld",&a[i]);
        v[i]=0;
    }
    qsort (a,n,sizeof(long long),sort);
    for (int i=31; i>=0; i--){
        long long count=0,back=n-1,sum=pow(2,i);
        while(count<back){
            if (v[count]==1){
                count++;
            } else if (v[back]==1){
                back--;
            } else if (a[count]+a[back]==sum){
                v[count]=1;
                v[back]=1;
                ans++;
                count++;
                back--;
            } else if (a[count]+a[back]<sum){
                count++;
            } else {
                back--;
            }
        }
    }
    printf("%lld\n",ans);
	return 0 ;
}
5
3 21 14 5 13
 5
2 3 24 6 13
 5
2 3 38 3 10
 5
3 24 14 5 13
 5
3 24 14 10 13
 5
3 24 16 10 13
 5
3 36 16 10 13
 5
3 36 16 14 13
 5
3 3 16 14 13
 5
3 3 24 14 13

1
 2
 0
 1
 1
 1
 1
 1
 1
 1

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 <stdlib.h>
#include <math.h>

int sort(const void *A,const void *B){return *(long long*)A>*(long long*)B?1:0;}

int main(void){
    int n;
    scanf("%d",&n);
    long long a[n],v[n],ans=0;
    for (int i=0; i<n; i++){
        scanf("%lld",&a[i]);
        v[i]=0;
    }
    qsort (a,n,sizeof(long long),sort);
    for (int i=31; i>=0; i--){
        long long count=0,back=n-1,sum=pow(2,i);
        while(count<back){
            if (v[count]==1){
                count++;
            } else if (v[back]==1){
                back--;
            } else if (a[count]+a[back]==sum){
                v[count]=1;
                v[back]=1;
                ans++;
                count++;
                back--;
            } else if (a[count]+a[back]<sum){
                count++;
            } else {
                back--;
            }
        }
    }
    printf("%lld\n",ans);
	return 0 ;
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.globl	sort
	.type	sort, @function
sort:
.LFB6:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movq	%rdi, -8(%rbp)
	movq	%rsi, -16(%rbp)
	movq	-8(%rbp), %rax
	movq	(%rax), %rdx
	movq	-16(%rbp), %rax
	movq	(%rax), %rax
	cmpq	%rax, %rdx
	setg	%al
	movzbl	%al, %eax
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE6:
	.size	sort, .-sort
	.section	.rodata
.LC0:
	.string	"%d"
.LC1:
	.string	"%lld"
.LC3:
	.string	"%lld\n"
	.text
	.globl	main
	.type	main, @function
main:
.LFB7:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r15
	pushq	%r14
	pushq	%r13
	pushq	%r12
	pushq	%rbx
	subq	$136, %rsp
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	movq	%rsp, %rax
	movq	%rax, %rbx
	leaq	-132(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-132(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -96(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -160(%rbp)
	movq	$0, -152(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -176(%rbp)
	movq	$0, -168(%rbp)
	cltq
	leaq	0(,%rax,8), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %edi
	movl	$0, %edx
	divq	%rdi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L4:
	cmpq	%rdx, %rsp
	je	.L5
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L4
.L5:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L6
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L6:
	movq	%rsp, %rax
	addq	$7, %rax
	shrq	$3, %rax
	salq	$3, %rax
	movq	%rax, -88(%rbp)
	movl	-132(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -80(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, %r14
	movl	$0, %r15d
	movslq	%eax, %rdx
	movq	%rdx, %r12
	movl	$0, %r13d
	cltq
	leaq	0(,%rax,8), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %esi
	movl	$0, %edx
	divq	%rsi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L7:
	cmpq	%rdx, %rsp
	je	.L8
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L7
.L8:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L9
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L9:
	movq	%rsp, %rax
	addq	$7, %rax
	shrq	$3, %rax
	salq	$3, %rax
	movq	%rax, -72(%rbp)
	movq	$0, -120(%rbp)
	movl	$0, -128(%rbp)
	jmp	.L10
.L11:
	movl	-128(%rbp), %eax
	cltq
	leaq	0(,%rax,8), %rdx
	movq	-88(%rbp), %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movq	-72(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movq	$0, (%rax,%rdx,8)
	addl	$1, -128(%rbp)
.L10:
	movl	-132(%rbp), %eax
	cmpl	%eax, -128(%rbp)
	jl	.L11
	movl	-132(%rbp), %eax
	movslq	%eax, %rsi
	movq	-88(%rbp), %rax
	leaq	sort(%rip), %rdx
	movq	%rdx, %rcx
	movl	$8, %edx
	movq	%rax, %rdi
	call	qsort@PLT
	movl	$31, -124(%rbp)
	jmp	.L12
.L19:
	movq	$0, -112(%rbp)
	movl	-132(%rbp), %eax
	subl	$1, %eax
	cltq
	movq	%rax, -104(%rbp)
	pxor	%xmm0, %xmm0
	cvtsi2sdl	-124(%rbp), %xmm0
	movq	.LC2(%rip), %rax
	movapd	%xmm0, %xmm1
	movq	%rax, %xmm0
	call	pow@PLT
	cvttsd2siq	%xmm0, %rax
	movq	%rax, -64(%rbp)
	jmp	.L13
.L18:
	movq	-72(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	cmpq	$1, %rax
	jne	.L14
	addq	$1, -112(%rbp)
	jmp	.L13
.L14:
	movq	-72(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	cmpq	$1, %rax
	jne	.L15
	subq	$1, -104(%rbp)
	jmp	.L13
.L15:
	movq	-88(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	(%rax,%rdx,8), %rcx
	movq	-88(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	addq	%rcx, %rax
	cmpq	%rax, -64(%rbp)
	jne	.L16
	movq	-72(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	$1, (%rax,%rdx,8)
	movq	-72(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	$1, (%rax,%rdx,8)
	addq	$1, -120(%rbp)
	addq	$1, -112(%rbp)
	subq	$1, -104(%rbp)
	jmp	.L13
.L16:
	movq	-88(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	(%rax,%rdx,8), %rcx
	movq	-88(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	addq	%rcx, %rax
	cmpq	%rax, -64(%rbp)
	jle	.L17
	addq	$1, -112(%rbp)
	jmp	.L13
.L17:
	subq	$1, -104(%rbp)
.L13:
	movq	-112(%rbp), %rax
	cmpq	-104(%rbp), %rax
	jl	.L18
	subl	$1, -124(%rbp)
.L12:
	cmpl	$0, -124(%rbp)
	jns	.L19
	movq	-120(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC3(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	%rbx, %rsp
	movq	-56(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L21
	call	__stack_chk_fail@PLT
.L21:
	leaq	-40(%rbp), %rsp
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE7:
	.size	main, .-main
	.section	.rodata
	.align 8
.LC2:
	.long	0
	.long	1073741824
	.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
	.globl	sort
	.type	sort, @function
sort:
.LFB6:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movq	%rdi, -8(%rbp)
	movq	%rsi, -16(%rbp)
	movq	-8(%rbp), %rax
	movq	(%rax), %rdx
	movq	-16(%rbp), %rax
	movq	(%rax), %rax
	cmpq	%rax, %rdx
	setg	%al
	movzbl	%al, %eax
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE6:
	.size	sort, .-sort
	.section	.rodata
.LC0:
	.string	"%d"
.LC1:
	.string	"%lld"
.LC3:
	.string	"%lld\n"
	.text
	.globl	main
	.type	main, @function
main:
.LFB7:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r15
	pushq	%r14
	pushq	%r13
	pushq	%r12
	pushq	%rbx
	subq	$136, %rsp
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	movq	%rsp, %rax
	movq	%rax, %rbx
	leaq	-132(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-132(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -96(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -160(%rbp)
	movq	$0, -152(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -176(%rbp)
	movq	$0, -168(%rbp)
	cltq
	leaq	0(,%rax,8), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %edi
	movl	$0, %edx
	divq	%rdi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L4:
	cmpq	%rdx, %rsp
	je	.L5
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L4
.L5:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L6
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L6:
	movq	%rsp, %rax
	addq	$7, %rax
	shrq	$3, %rax
	salq	$3, %rax
	movq	%rax, -88(%rbp)
	movl	-132(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -80(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, %r14
	movl	$0, %r15d
	movslq	%eax, %rdx
	movq	%rdx, %r12
	movl	$0, %r13d
	cltq
	leaq	0(,%rax,8), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %esi
	movl	$0, %edx
	divq	%rsi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L7:
	cmpq	%rdx, %rsp
	je	.L8
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L7
.L8:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L9
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L9:
	movq	%rsp, %rax
	addq	$7, %rax
	shrq	$3, %rax
	salq	$3, %rax
	movq	%rax, -72(%rbp)
	movq	$0, -120(%rbp)
	movl	$0, -128(%rbp)
	jmp	.L10
.L11:
	movl	-128(%rbp), %eax
	cltq
	leaq	0(,%rax,8), %rdx
	movq	-88(%rbp), %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movq	-72(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movq	$0, (%rax,%rdx,8)
	addl	$1, -128(%rbp)
.L10:
	movl	-132(%rbp), %eax
	cmpl	%eax, -128(%rbp)
	jl	.L11
	movl	-132(%rbp), %eax
	movslq	%eax, %rsi
	movq	-88(%rbp), %rax
	leaq	sort(%rip), %rdx
	movq	%rdx, %rcx
	movl	$8, %edx
	movq	%rax, %rdi
	call	qsort@PLT
	movl	$31, -124(%rbp)
	jmp	.L12
.L19:
	movq	$0, -112(%rbp)
	movl	-132(%rbp), %eax
	subl	$1, %eax
	cltq
	movq	%rax, -104(%rbp)
	pxor	%xmm0, %xmm0
	cvtsi2sdl	-124(%rbp), %xmm0
	movq	.LC2(%rip), %rax
	movapd	%xmm0, %xmm1
	movq	%rax, %xmm0
	call	pow@PLT
	cvttsd2siq	%xmm0, %rax
	movq	%rax, -64(%rbp)
	jmp	.L13
.L18:
	movq	-72(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	cmpq	$1, %rax
	jne	.L14
	addq	$1, -112(%rbp)
	jmp	.L13
.L14:
	movq	-72(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	cmpq	$1, %rax
	jne	.L15
	subq	$1, -104(%rbp)
	jmp	.L13
.L15:
	movq	-88(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	(%rax,%rdx,8), %rcx
	movq	-88(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	addq	%rcx, %rax
	cmpq	%rax, -64(%rbp)
	jne	.L16
	movq	-72(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	$1, (%rax,%rdx,8)
	movq	-72(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	$1, (%rax,%rdx,8)
	addq	$1, -120(%rbp)
	addq	$1, -112(%rbp)
	subq	$1, -104(%rbp)
	jmp	.L13
.L16:
	movq	-88(%rbp), %rax
	movq	-112(%rbp), %rdx
	movq	(%rax,%rdx,8), %rcx
	movq	-88(%rbp), %rax
	movq	-104(%rbp), %rdx
	movq	(%rax,%rdx,8), %rax
	addq	%rcx, %rax
	cmpq	%rax, -64(%rbp)
	jle	.L17
	addq	$1, -112(%rbp)
	jmp	.L13
.L17:
	subq	$1, -104(%rbp)
.L13:
	movq	-112(%rbp), %rax
	cmpq	-104(%rbp), %rax
	jl	.L18
	subl	$1, -124(%rbp)
.L12:
	cmpl	$0, -124(%rbp)
	jns	.L19
	movq	-120(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC3(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	%rbx, %rsp
	movq	-56(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L21
	call	__stack_chk_fail@PLT
.L21:
	leaq	-40(%rbp), %rsp
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE7:
	.size	main, .-main
	.section	.rodata
	.align 8
.LC2:
	.long	0
	.long	1073741824
	.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:
