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(void){

        char s[13];
        scanf("%s",s);

        int i = 0;

        while(s[i]){
                printf("%c",s[i]);
                if(i==3){
                        printf(" ");
                }   
                i++;
        }   
printf("\n");
return 0;
}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$40, %rsp
	.cfi_def_cfa_offset 64
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	11(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	11(%rsp), %edi
	testb	%dil, %dil
	je	.L5
	call	putchar@PLT
	movsbl	12(%rsp), %edi
	movl	$1, %ebx
	testb	%dil, %dil
	je	.L5
	.p2align 4,,10
	.p2align 3
.L6:
	call	putchar@PLT
	cmpq	$3, %rbx
	je	.L16
	addq	$1, %rbx
	movsbl	0(%rbp,%rbx), %edi
	testb	%dil, %dil
	jne	.L6
.L5:
	movl	$10, %edi
	call	putchar@PLT
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
	.p2align 4,,10
	.p2align 3
.L16:
	.cfi_restore_state
	movl	$32, %edi
	movl	$4, %ebx
	call	putchar@PLT
	movsbl	4(%rbp), %edi
	testb	%dil, %dil
	jne	.L6
	jmp	.L5
.L17:
	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	"%s"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$40, %rsp
	.cfi_def_cfa_offset 64
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	11(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	11(%rsp), %edi
	testb	%dil, %dil
	je	.L5
	call	putchar@PLT
	movsbl	12(%rsp), %edi
	movl	$1, %ebx
	testb	%dil, %dil
	je	.L5
	.p2align 4,,10
	.p2align 3
.L6:
	call	putchar@PLT
	cmpq	$3, %rbx
	je	.L16
	addq	$1, %rbx
	movsbl	0(%rbp,%rbx), %edi
	testb	%dil, %dil
	jne	.L6
.L5:
	movl	$10, %edi
	call	putchar@PLT
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
	.p2align 4,,10
	.p2align 3
.L16:
	.cfi_restore_state
	movl	$32, %edi
	movl	$4, %ebx
	call	putchar@PLT
	movsbl	4(%rbp), %edi
	testb	%dil, %dil
	jne	.L6
	jmp	.L5
.L17:
	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	"%s"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$40, %rsp
	.cfi_def_cfa_offset 64
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	11(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	11(%rsp), %edi
	testb	%dil, %dil
	je	.L5
	call	putchar@PLT
	movsbl	12(%rsp), %edi
	movl	$1, %ebx
	testb	%dil, %dil
	je	.L5
	.p2align 4,,10
	.p2align 3
.L6:
	call	putchar@PLT
	cmpq	$3, %rbx
	je	.L16
	addq	$1, %rbx
	movsbl	0(%rbp,%rbx), %edi
	testb	%dil, %dil
	jne	.L6
.L5:
	movl	$10, %edi
	call	putchar@PLT
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
	.p2align 4,,10
	.p2align 3
.L16:
	.cfi_restore_state
	movl	$32, %edi
	movl	$4, %ebx
	call	putchar@PLT
	movsbl	4(%rbp), %edi
	testb	%dil, %dil
	jne	.L6
	jmp	.L5
.L17:
	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(void){

        char s[13];
        scanf("%s",s);

        int i = 0;

        while(s[i]){
                printf("%c",s[i]);
                if(i==3){
                        printf(" ");
                }   
                i++;
        }   
printf("\n");
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(void){

        char s[13];
        scanf("%s",s);

        int i = 0;

        while(s[i]){
                printf("%c",s[i]);
                if(i==3){
                        printf(" ");
                }   
                i++;
        }   
printf("\n");
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:

ETAUDARGTSOP
 AACDEFGHIJKL
 COCEFESTIVAL
 POSTGRADUATF
 ALCDEFGHIJKA
 COCEFESTIV@L
 POSTGRAUDATF
 AKJIHGFEDCLA
 L@VITSEFECOC
 POSTGRATDATF

ETAU DARGTSOP
 AACD EFGHIJKL
 COCE FESTIVAL
 POST GRADUATF
 ALCD EFGHIJKA
 COCE FESTIV@L
 POST GRAUDATF
 AKJI HGFEDCLA
 L@VI TSEFECOC
 POST GRATDATF

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(void){

        char s[13];
        scanf("%s",s);

        int i = 0;

        while(s[i]){
                printf("%c",s[i]);
                if(i==3){
                        printf(" ");
                }   
                i++;
        }   
printf("\n");
return 0;
}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$40, %rsp
	.cfi_def_cfa_offset 64
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	11(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	11(%rsp), %edi
	testb	%dil, %dil
	je	.L5
	call	putchar@PLT
	movsbl	12(%rsp), %edi
	movl	$1, %ebx
	testb	%dil, %dil
	je	.L5
	.p2align 4,,10
	.p2align 3
.L6:
	call	putchar@PLT
	cmpq	$3, %rbx
	je	.L16
	addq	$1, %rbx
	movsbl	0(%rbp,%rbx), %edi
	testb	%dil, %dil
	jne	.L6
.L5:
	movl	$10, %edi
	call	putchar@PLT
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
	.p2align 4,,10
	.p2align 3
.L16:
	.cfi_restore_state
	movl	$32, %edi
	movl	$4, %ebx
	call	putchar@PLT
	movsbl	4(%rbp), %edi
	testb	%dil, %dil
	jne	.L6
	jmp	.L5
.L17:
	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	"%s"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$40, %rsp
	.cfi_def_cfa_offset 64
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	11(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	movsbl	11(%rsp), %edi
	testb	%dil, %dil
	je	.L5
	call	putchar@PLT
	movsbl	12(%rsp), %edi
	movl	$1, %ebx
	testb	%dil, %dil
	je	.L5
	.p2align 4,,10
	.p2align 3
.L6:
	call	putchar@PLT
	cmpq	$3, %rbx
	je	.L16
	addq	$1, %rbx
	movsbl	0(%rbp,%rbx), %edi
	testb	%dil, %dil
	jne	.L6
.L5:
	movl	$10, %edi
	call	putchar@PLT
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L17
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
	.p2align 4,,10
	.p2align 3
.L16:
	.cfi_restore_state
	movl	$32, %edi
	movl	$4, %ebx
	call	putchar@PLT
	movsbl	4(%rbp), %edi
	testb	%dil, %dil
	jne	.L6
	jmp	.L5
.L17:
	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:
```