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>
int main()
{
    char s[1000000];
    char ch;
    int i,n,count;
    gets(s);
    n=strlen(s);
    for(ch=97; ch<123; ch++)
    {
            count=1;
        for(i=0; i<n; i++)
        {
            if(ch==s[i])
                count=0;
        }
        if(count)
        {
            break;
        }
    }

    if(ch==123)
        printf("None\n");
    else
        printf("%c\n",ch);
    return 0;

}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%c\n"
.LC1:
	.string	"None"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	-999424(%rsp), %r11
	.cfi_def_cfa 11, 999440
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$592, %rsp
	.cfi_def_cfa_offset 1000032
	movq	%fs:40, %rax
	movq	%rax, 1000008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rdi
	call	gets@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	$97, %esi
	xorl	%edi, %edi
	leal	-1(%rax), %edx
	leaq	1(%rsp,%rdx), %r8
	.p2align 4,,10
	.p2align 3
.L2:
	testq	%rax, %rax
	je	.L7
	movq	%rbx, %rdx
	movl	$1, %ecx
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	%sil, (%rdx)
	cmove	%edi, %ecx
	addq	$1, %rdx
	cmpq	%r8, %rdx
	jne	.L4
	testl	%ecx, %ecx
	jne	.L7
	addl	$1, %esi
	cmpb	$123, %sil
	jne	.L2
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L7:
	movsbl	%sil, %edx
	movl	$1, %edi
	xorl	%eax, %eax
	leaq	.LC0(%rip), %rsi
	call	__printf_chk@PLT
.L6:
	movq	1000008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$1000016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 8
	ret
.L17:
	.cfi_restore_state
	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:
```

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	"%c\n"
.LC1:
	.string	"None"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	-999424(%rsp), %r11
	.cfi_def_cfa 11, 999440
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$592, %rsp
	.cfi_def_cfa_offset 1000032
	movq	%fs:40, %rax
	movq	%rax, 1000008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rdi
	call	gets@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	$97, %esi
	xorl	%edi, %edi
	leal	-1(%rax), %edx
	leaq	1(%rsp,%rdx), %r8
	.p2align 4,,10
	.p2align 3
.L2:
	testq	%rax, %rax
	je	.L7
	movq	%rbx, %rdx
	movl	$1, %ecx
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	%sil, (%rdx)
	cmove	%edi, %ecx
	addq	$1, %rdx
	cmpq	%r8, %rdx
	jne	.L4
	testl	%ecx, %ecx
	jne	.L7
	addl	$1, %esi
	cmpb	$123, %sil
	jne	.L2
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L7:
	movsbl	%sil, %edx
	movl	$1, %edi
	xorl	%eax, %eax
	leaq	.LC0(%rip), %rsi
	call	__printf_chk@PLT
.L6:
	movq	1000008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$1000016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 8
	ret
.L17:
	.cfi_restore_state
	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
```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%c\n"
.LC1:
	.string	"None"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	-999424(%rsp), %r11
	.cfi_def_cfa 11, 999440
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$592, %rsp
	.cfi_def_cfa_offset 1000032
	movq	%fs:40, %rax
	movq	%rax, 1000008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rdi
	call	gets@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	$97, %esi
	xorl	%edi, %edi
	leal	-1(%rax), %edx
	leaq	1(%rsp,%rdx), %r8
	.p2align 4,,10
	.p2align 3
.L2:
	testq	%rax, %rax
	je	.L7
	movq	%rbx, %rdx
	movl	$1, %ecx
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	%sil, (%rdx)
	cmove	%edi, %ecx
	addq	$1, %rdx
	cmpq	%r8, %rdx
	jne	.L4
	testl	%ecx, %ecx
	jne	.L7
	addl	$1, %esi
	cmpb	$123, %sil
	jne	.L2
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L7:
	movsbl	%sil, %edx
	movl	$1, %edi
	xorl	%eax, %eax
	leaq	.LC0(%rip), %rsi
	call	__printf_chk@PLT
.L6:
	movq	1000008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$1000016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 8
	ret
.L17:
	.cfi_restore_state
	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:
```
```c
#include<stdio.h>
int main()
{
    char s[1000000];
    char ch;
    int i,n,count;
    gets(s);
    n=strlen(s);
    for(ch=97; ch<123; ch++)
    {
            count=1;
        for(i=0; i<n; i++)
        {
            if(ch==s[i])
                count=0;
        }
        if(count)
        {
            break;
        }
    }

    if(ch==123)
        printf("None\n");
    else
        printf("%c\n",ch);
    return 0;

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

```c
#include<stdio.h>
int main()
{
    char s[1000000];
    char ch;
    int i,n,count;
    gets(s);
    n=strlen(s);
    for(ch=97; ch<123; ch++)
    {
            count=1;
        for(i=0; i<n; i++)
        {
            if(ch==s[i])
                count=0;
        }
        if(count)
        {
            break;
        }
    }

    if(ch==123)
        printf("None\n");
    else
        printf("%c\n",ch);
    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:

atcoderregularcontest

b

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>
int main()
{
    char s[1000000];
    char ch;
    int i,n,count;
    gets(s);
    n=strlen(s);
    for(ch=97; ch<123; ch++)
    {
            count=1;
        for(i=0; i<n; i++)
        {
            if(ch==s[i])
                count=0;
        }
        if(count)
        {
            break;
        }
    }

    if(ch==123)
        printf("None\n");
    else
        printf("%c\n",ch);
    return 0;

}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%c\n"
.LC1:
	.string	"None"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	-999424(%rsp), %r11
	.cfi_def_cfa 11, 999440
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$592, %rsp
	.cfi_def_cfa_offset 1000032
	movq	%fs:40, %rax
	movq	%rax, 1000008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rdi
	call	gets@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	$97, %esi
	xorl	%edi, %edi
	leal	-1(%rax), %edx
	leaq	1(%rsp,%rdx), %r8
	.p2align 4,,10
	.p2align 3
.L2:
	testq	%rax, %rax
	je	.L7
	movq	%rbx, %rdx
	movl	$1, %ecx
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	%sil, (%rdx)
	cmove	%edi, %ecx
	addq	$1, %rdx
	cmpq	%r8, %rdx
	jne	.L4
	testl	%ecx, %ecx
	jne	.L7
	addl	$1, %esi
	cmpb	$123, %sil
	jne	.L2
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L7:
	movsbl	%sil, %edx
	movl	$1, %edi
	xorl	%eax, %eax
	leaq	.LC0(%rip), %rsi
	call	__printf_chk@PLT
.L6:
	movq	1000008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$1000016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 8
	ret
.L17:
	.cfi_restore_state
	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:
```

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	"%c\n"
.LC1:
	.string	"None"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	-999424(%rsp), %r11
	.cfi_def_cfa 11, 999440
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$592, %rsp
	.cfi_def_cfa_offset 1000032
	movq	%fs:40, %rax
	movq	%rax, 1000008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rdi
	call	gets@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	movl	$97, %esi
	xorl	%edi, %edi
	leal	-1(%rax), %edx
	leaq	1(%rsp,%rdx), %r8
	.p2align 4,,10
	.p2align 3
.L2:
	testq	%rax, %rax
	je	.L7
	movq	%rbx, %rdx
	movl	$1, %ecx
	.p2align 4,,10
	.p2align 3
.L4:
	cmpb	%sil, (%rdx)
	cmove	%edi, %ecx
	addq	$1, %rdx
	cmpq	%r8, %rdx
	jne	.L4
	testl	%ecx, %ecx
	jne	.L7
	addl	$1, %esi
	cmpb	$123, %sil
	jne	.L2
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L7:
	movsbl	%sil, %edx
	movl	$1, %edi
	xorl	%eax, %eax
	leaq	.LC0(%rip), %rsi
	call	__printf_chk@PLT
.L6:
	movq	1000008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$1000016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 8
	ret
.L17:
	.cfi_restore_state
	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:
```