Given the following C code and assembly code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
a[26];
main(i,f,s){
	for(;(i=getchar())>96;)a[i-97]++;
	for(s=f=i=0;i<26;i++){
		if(a[i]&1){if(f)puts("0"),exit(0);f=1;}
		a[i]/=2;
		s+=a[i];
	}
	long long r=1;
	for(;s;s--)r*=s;
	for(i=0;i<26;i++)for(;a[i];a[i]--)r/=a[i];
	printf("%lld\n",r);
	exit(0);
}```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"0"
.LC1:
	.string	"%lld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	a(%rip), %rbx
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L3:
	subl	$97, %eax
	cltq
	addl	$1, (%rbx,%rax,4)
.L2:
	xorl	%eax, %eax
	call	getchar@PLT
	cmpl	$96, %eax
	jg	.L3
	leaq	a(%rip), %r8
	xorl	%esi, %esi
	xorl	%edi, %edi
	leaq	104(%r8), %r9
	movq	%r8, %rdx
	.p2align 4,,10
	.p2align 3
.L5:
	movl	(%rdx), %ecx
	movl	%ecx, %eax
	andl	$1, %eax
	je	.L4
	testl	%edi, %edi
	jne	.L24
	movl	%eax, %edi
.L4:
	movl	%ecx, %eax
	addq	$4, %rdx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	movl	%eax, -4(%rdx)
	addl	%eax, %esi
	cmpq	%r9, %rdx
	jne	.L5
	testl	%esi, %esi
	je	.L14
	movslq	%esi, %rcx
	leal	-1(%rsi), %eax
	leaq	-1(%rcx), %rdx
	movq	%rdx, %rsi
	subq	%rax, %rsi
	movl	$1, %eax
	jmp	.L7
	.p2align 4,,10
	.p2align 3
.L25:
	subq	$1, %rdx
.L7:
	imulq	%rcx, %rax
	movq	%rdx, %rcx
	cmpq	%rsi, %rdx
	jne	.L25
	.p2align 4,,10
	.p2align 3
.L8:
	movl	(%r8), %edx
	testl	%edx, %edx
	je	.L12
	movslq	%edx, %rsi
	subl	$1, %edx
	leaq	-1(%rsi), %rcx
	movq	%rcx, %rdi
	subq	%rdx, %rdi
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L26:
	subq	$1, %rcx
.L9:
	cqto
	idivq	%rsi
	movq	%rcx, %rsi
	cmpq	%rcx, %rdi
	jne	.L26
	movl	$0, (%r8)
.L12:
	addq	$4, %r8
	cmpq	%r9, %r8
	jne	.L8
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rdi
	xorl	%eax, %eax
	call	printf@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L24:
	leaq	.LC0(%rip), %rdi
	call	puts@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L14:
	movl	$1, %eax
	jmp	.L8
	.cfi_endproc
.LFE0:
	.size	main, .-main
	.globl	a
	.bss
	.align 32
	.type	a, @object
	.size	a, 104
a:
	.zero	104
	.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	"0"
.LC1:
	.string	"%lld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	a(%rip), %rbx
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L3:
	subl	$97, %eax
	cltq
	addl	$1, (%rbx,%rax,4)
.L2:
	xorl	%eax, %eax
	call	getchar@PLT
	cmpl	$96, %eax
	jg	.L3
	leaq	a(%rip), %r8
	xorl	%esi, %esi
	xorl	%edi, %edi
	leaq	104(%r8), %r9
	movq	%r8, %rdx
	.p2align 4,,10
	.p2align 3
.L5:
	movl	(%rdx), %ecx
	movl	%ecx, %eax
	andl	$1, %eax
	je	.L4
	testl	%edi, %edi
	jne	.L24
	movl	%eax, %edi
.L4:
	movl	%ecx, %eax
	addq	$4, %rdx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	movl	%eax, -4(%rdx)
	addl	%eax, %esi
	cmpq	%r9, %rdx
	jne	.L5
	testl	%esi, %esi
	je	.L14
	movslq	%esi, %rcx
	leal	-1(%rsi), %eax
	leaq	-1(%rcx), %rdx
	movq	%rdx, %rsi
	subq	%rax, %rsi
	movl	$1, %eax
	jmp	.L7
	.p2align 4,,10
	.p2align 3
.L25:
	subq	$1, %rdx
.L7:
	imulq	%rcx, %rax
	movq	%rdx, %rcx
	cmpq	%rsi, %rdx
	jne	.L25
	.p2align 4,,10
	.p2align 3
.L8:
	movl	(%r8), %edx
	testl	%edx, %edx
	je	.L12
	movslq	%edx, %rsi
	subl	$1, %edx
	leaq	-1(%rsi), %rcx
	movq	%rcx, %rdi
	subq	%rdx, %rdi
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L26:
	subq	$1, %rcx
.L9:
	cqto
	idivq	%rsi
	movq	%rcx, %rsi
	cmpq	%rcx, %rdi
	jne	.L26
	movl	$0, (%r8)
.L12:
	addq	$4, %r8
	cmpq	%r9, %r8
	jne	.L8
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rdi
	xorl	%eax, %eax
	call	printf@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L24:
	leaq	.LC0(%rip), %rdi
	call	puts@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L14:
	movl	$1, %eax
	jmp	.L8
	.cfi_endproc
.LFE0:
	.size	main, .-main
	.globl	a
	.bss
	.align 32
	.type	a, @object
	.size	a, 104
a:
	.zero	104
	.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	"0"
.LC1:
	.string	"%lld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	a(%rip), %rbx
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L3:
	subl	$97, %eax
	cltq
	addl	$1, (%rbx,%rax,4)
.L2:
	xorl	%eax, %eax
	call	getchar@PLT
	cmpl	$96, %eax
	jg	.L3
	leaq	a(%rip), %r8
	xorl	%esi, %esi
	xorl	%edi, %edi
	leaq	104(%r8), %r9
	movq	%r8, %rdx
	.p2align 4,,10
	.p2align 3
.L5:
	movl	(%rdx), %ecx
	movl	%ecx, %eax
	andl	$1, %eax
	je	.L4
	testl	%edi, %edi
	jne	.L24
	movl	%eax, %edi
.L4:
	movl	%ecx, %eax
	addq	$4, %rdx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	movl	%eax, -4(%rdx)
	addl	%eax, %esi
	cmpq	%r9, %rdx
	jne	.L5
	testl	%esi, %esi
	je	.L14
	movslq	%esi, %rcx
	leal	-1(%rsi), %eax
	leaq	-1(%rcx), %rdx
	movq	%rdx, %rsi
	subq	%rax, %rsi
	movl	$1, %eax
	jmp	.L7
	.p2align 4,,10
	.p2align 3
.L25:
	subq	$1, %rdx
.L7:
	imulq	%rcx, %rax
	movq	%rdx, %rcx
	cmpq	%rsi, %rdx
	jne	.L25
	.p2align 4,,10
	.p2align 3
.L8:
	movl	(%r8), %edx
	testl	%edx, %edx
	je	.L12
	movslq	%edx, %rsi
	subl	$1, %edx
	leaq	-1(%rsi), %rcx
	movq	%rcx, %rdi
	subq	%rdx, %rdi
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L26:
	subq	$1, %rcx
.L9:
	cqto
	idivq	%rsi
	movq	%rcx, %rsi
	cmpq	%rcx, %rdi
	jne	.L26
	movl	$0, (%r8)
.L12:
	addq	$4, %r8
	cmpq	%r9, %r8
	jne	.L8
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rdi
	xorl	%eax, %eax
	call	printf@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L24:
	leaq	.LC0(%rip), %rdi
	call	puts@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L14:
	movl	$1, %eax
	jmp	.L8
	.cfi_endproc
.LFE0:
	.size	main, .-main
	.globl	a
	.bss
	.align 32
	.type	a, @object
	.size	a, 104
a:
	.zero	104
	.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
a[26];
main(i,f,s){
	for(;(i=getchar())>96;)a[i-97]++;
	for(s=f=i=0;i<26;i++){
		if(a[i]&1){if(f)puts("0"),exit(0);f=1;}
		a[i]/=2;
		s+=a[i];
	}
	long long r=1;
	for(;s;s--)r*=s;
	for(i=0;i<26;i++)for(;a[i];a[i]--)r/=a[i];
	printf("%lld\n",r);
	exit(0);
}```
Given the following C code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
a[26];
main(i,f,s){
	for(;(i=getchar())>96;)a[i-97]++;
	for(s=f=i=0;i<26;i++){
		if(a[i]&1){if(f)puts("0"),exit(0);f=1;}
		a[i]/=2;
		s+=a[i];
	}
	long long r=1;
	for(;s;s--)r*=s;
	for(i=0;i<26;i++)for(;a[i];a[i]--)r/=a[i];
	printf("%lld\n",r);
	exit(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:

ac
 cbcb
 cc
 abca
 bc
 aaca
 cb
 aacb
 ca
 bacb

0
 2
 1
 0
 0
 0
 0
 0
 0
 0

Given the following C code and assembly code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
a[26];
main(i,f,s){
	for(;(i=getchar())>96;)a[i-97]++;
	for(s=f=i=0;i<26;i++){
		if(a[i]&1){if(f)puts("0"),exit(0);f=1;}
		a[i]/=2;
		s+=a[i];
	}
	long long r=1;
	for(;s;s--)r*=s;
	for(i=0;i<26;i++)for(;a[i];a[i]--)r/=a[i];
	printf("%lld\n",r);
	exit(0);
}```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"0"
.LC1:
	.string	"%lld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	a(%rip), %rbx
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L3:
	subl	$97, %eax
	cltq
	addl	$1, (%rbx,%rax,4)
.L2:
	xorl	%eax, %eax
	call	getchar@PLT
	cmpl	$96, %eax
	jg	.L3
	leaq	a(%rip), %r8
	xorl	%esi, %esi
	xorl	%edi, %edi
	leaq	104(%r8), %r9
	movq	%r8, %rdx
	.p2align 4,,10
	.p2align 3
.L5:
	movl	(%rdx), %ecx
	movl	%ecx, %eax
	andl	$1, %eax
	je	.L4
	testl	%edi, %edi
	jne	.L24
	movl	%eax, %edi
.L4:
	movl	%ecx, %eax
	addq	$4, %rdx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	movl	%eax, -4(%rdx)
	addl	%eax, %esi
	cmpq	%r9, %rdx
	jne	.L5
	testl	%esi, %esi
	je	.L14
	movslq	%esi, %rcx
	leal	-1(%rsi), %eax
	leaq	-1(%rcx), %rdx
	movq	%rdx, %rsi
	subq	%rax, %rsi
	movl	$1, %eax
	jmp	.L7
	.p2align 4,,10
	.p2align 3
.L25:
	subq	$1, %rdx
.L7:
	imulq	%rcx, %rax
	movq	%rdx, %rcx
	cmpq	%rsi, %rdx
	jne	.L25
	.p2align 4,,10
	.p2align 3
.L8:
	movl	(%r8), %edx
	testl	%edx, %edx
	je	.L12
	movslq	%edx, %rsi
	subl	$1, %edx
	leaq	-1(%rsi), %rcx
	movq	%rcx, %rdi
	subq	%rdx, %rdi
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L26:
	subq	$1, %rcx
.L9:
	cqto
	idivq	%rsi
	movq	%rcx, %rsi
	cmpq	%rcx, %rdi
	jne	.L26
	movl	$0, (%r8)
.L12:
	addq	$4, %r8
	cmpq	%r9, %r8
	jne	.L8
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rdi
	xorl	%eax, %eax
	call	printf@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L24:
	leaq	.LC0(%rip), %rdi
	call	puts@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L14:
	movl	$1, %eax
	jmp	.L8
	.cfi_endproc
.LFE0:
	.size	main, .-main
	.globl	a
	.bss
	.align 32
	.type	a, @object
	.size	a, 104
a:
	.zero	104
	.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	"0"
.LC1:
	.string	"%lld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	a(%rip), %rbx
	jmp	.L2
	.p2align 4,,10
	.p2align 3
.L3:
	subl	$97, %eax
	cltq
	addl	$1, (%rbx,%rax,4)
.L2:
	xorl	%eax, %eax
	call	getchar@PLT
	cmpl	$96, %eax
	jg	.L3
	leaq	a(%rip), %r8
	xorl	%esi, %esi
	xorl	%edi, %edi
	leaq	104(%r8), %r9
	movq	%r8, %rdx
	.p2align 4,,10
	.p2align 3
.L5:
	movl	(%rdx), %ecx
	movl	%ecx, %eax
	andl	$1, %eax
	je	.L4
	testl	%edi, %edi
	jne	.L24
	movl	%eax, %edi
.L4:
	movl	%ecx, %eax
	addq	$4, %rdx
	shrl	$31, %eax
	addl	%ecx, %eax
	sarl	%eax
	movl	%eax, -4(%rdx)
	addl	%eax, %esi
	cmpq	%r9, %rdx
	jne	.L5
	testl	%esi, %esi
	je	.L14
	movslq	%esi, %rcx
	leal	-1(%rsi), %eax
	leaq	-1(%rcx), %rdx
	movq	%rdx, %rsi
	subq	%rax, %rsi
	movl	$1, %eax
	jmp	.L7
	.p2align 4,,10
	.p2align 3
.L25:
	subq	$1, %rdx
.L7:
	imulq	%rcx, %rax
	movq	%rdx, %rcx
	cmpq	%rsi, %rdx
	jne	.L25
	.p2align 4,,10
	.p2align 3
.L8:
	movl	(%r8), %edx
	testl	%edx, %edx
	je	.L12
	movslq	%edx, %rsi
	subl	$1, %edx
	leaq	-1(%rsi), %rcx
	movq	%rcx, %rdi
	subq	%rdx, %rdi
	jmp	.L9
	.p2align 4,,10
	.p2align 3
.L26:
	subq	$1, %rcx
.L9:
	cqto
	idivq	%rsi
	movq	%rcx, %rsi
	cmpq	%rcx, %rdi
	jne	.L26
	movl	$0, (%r8)
.L12:
	addq	$4, %r8
	cmpq	%r9, %r8
	jne	.L8
	movq	%rax, %rsi
	leaq	.LC1(%rip), %rdi
	xorl	%eax, %eax
	call	printf@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L24:
	leaq	.LC0(%rip), %rdi
	call	puts@PLT
	xorl	%edi, %edi
	call	exit@PLT
.L14:
	movl	$1, %eax
	jmp	.L8
	.cfi_endproc
.LFE0:
	.size	main, .-main
	.globl	a
	.bss
	.align 32
	.type	a, @object
	.size	a, 104
a:
	.zero	104
	.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:
```