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<string.h>

int main()
{
	char t[300000];
	char *p, *c;
	int i,m=0;
	scanf("%s", &t);
	p = t;
	c = p;
	m = strlen(p);
	for (i = 0; i < m; i++)
	{
		if (i == 0) {
			if (*p == '?')
				*p = 'D';
		}
		else if (i == m - 1) {
			if (*p == '?')
				*p = 'D';
		}

		if(*p=='?'){
			if (*(p - 1) == 'P')
				*p = 'D';
			else
				*p = 'D';
		}
		*(p++);
	}

	for (i = 0; i < m; i++)
	{
		printf("%c", *c);
		*(c++);
	}

	return 0;
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%s"
	.text
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	leaq	-299008(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$1040, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$0, -300036(%rbp)
	leaq	-300016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-300016(%rbp), %rax
	movq	%rax, -300032(%rbp)
	movq	-300032(%rbp), %rax
	movq	%rax, -300024(%rbp)
	movq	-300032(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -300036(%rbp)
	movl	$0, -300040(%rbp)
	jmp	.L2
.L7:
	cmpl	$0, -300040(%rbp)
	jne	.L3
	movq	-300032(%rbp), %rax
	movzbl	(%rax), %eax
	cmpb	$63, %al
	jne	.L4
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
	jmp	.L4
.L3:
	movl	-300036(%rbp), %eax
	subl	$1, %eax
	cmpl	%eax, -300040(%rbp)
	jne	.L4
	movq	-300032(%rbp), %rax
	movzbl	(%rax), %eax
	cmpb	$63, %al
	jne	.L4
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
.L4:
	movq	-300032(%rbp), %rax
	movzbl	(%rax), %eax
	cmpb	$63, %al
	jne	.L5
	movq	-300032(%rbp), %rax
	subq	$1, %rax
	movzbl	(%rax), %eax
	cmpb	$80, %al
	jne	.L6
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
	jmp	.L5
.L6:
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
.L5:
	movq	-300032(%rbp), %rax
	addq	$1, %rax
	movq	%rax, -300032(%rbp)
	addl	$1, -300040(%rbp)
.L2:
	movl	-300040(%rbp), %eax
	cmpl	-300036(%rbp), %eax
	jl	.L7
	movl	$0, -300040(%rbp)
	jmp	.L8
.L9:
	movq	-300024(%rbp), %rax
	movzbl	(%rax), %eax
	movsbl	%al, %eax
	movl	%eax, %edi
	call	putchar@PLT
	movq	-300024(%rbp), %rax
	addq	$1, %rax
	movq	%rax, -300024(%rbp)
	addl	$1, -300040(%rbp)
.L8:
	movl	-300040(%rbp), %eax
	cmpl	-300036(%rbp), %eax
	jl	.L9
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L11
	call	__stack_chk_fail@PLT
.L11:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.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.
user
	.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:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	leaq	-299008(%rsp), %r11
	.cfi_def_cfa 11, 299032
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$1016, %rsp
	.cfi_def_cfa_offset 300048
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 300008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	xorl	%edx, %edx
	movq	%rbx, %rcx
	movl	%eax, %edi
	testq	%rax, %rax
	je	.L9
	.p2align 4,,10
	.p2align 3
.L2:
	movzbl	(%rcx), %esi
	cmpb	$63, %sil
	jne	.L7
	movb	$68, (%rcx)
.L7:
	addl	$1, %edx
	addq	$1, %rcx
	cmpl	%edx, %edi
	jne	.L2
	leaq	(%rbx,%rax), %rbp
	.p2align 4,,10
	.p2align 3
.L8:
	movsbl	(%rbx), %edi
	addq	$1, %rbx
	call	putchar@PLT
	cmpq	%rbp, %rbx
	jne	.L8
.L9:
	movq	300008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L22
	addq	$300024, %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
.L22:
	.cfi_restore_state
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE35:
	.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
	.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:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	leaq	-299008(%rsp), %r11
	.cfi_def_cfa 11, 299032
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$1016, %rsp
	.cfi_def_cfa_offset 300048
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 300008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	xorl	%edx, %edx
	movq	%rbx, %rcx
	movl	%eax, %edi
	testq	%rax, %rax
	je	.L9
	.p2align 4,,10
	.p2align 3
.L2:
	movzbl	(%rcx), %esi
	cmpb	$63, %sil
	jne	.L7
	movb	$68, (%rcx)
.L7:
	addl	$1, %edx
	addq	$1, %rcx
	cmpl	%edx, %edi
	jne	.L2
	leaq	(%rbx,%rax), %rbp
	.p2align 4,,10
	.p2align 3
.L8:
	movsbl	(%rbx), %edi
	addq	$1, %rbx
	call	putchar@PLT
	cmpq	%rbp, %rbx
	jne	.L8
.L9:
	movq	300008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L22
	addq	$300024, %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
.L22:
	.cfi_restore_state
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE35:
	.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:

#include<stdio.h>
#include<string.h>

int main()
{
	char t[300000];
	char *p, *c;
	int i,m=0;
	scanf("%s", &t);
	p = t;
	c = p;
	m = strlen(p);
	for (i = 0; i < m; i++)
	{
		if (i == 0) {
			if (*p == '?')
				*p = 'D';
		}
		else if (i == m - 1) {
			if (*p == '?')
				*p = 'D';
		}

		if(*p=='?'){
			if (*(p - 1) == 'P')
				*p = 'D';
			else
				*p = 'D';
		}
		*(p++);
	}

	for (i = 0; i < m; i++)
	{
		printf("%c", *c);
		*(c++);
	}

	return 0;
}
PDPD???
 ?P?P
 DDPP???
 ??PP
 DDPO???
 ??OP
 DDPO?>?
 ??OO
 ?>?OPDD
 @?OP

PDPDDDD DPDP DDPPDDD DDPP DDPODDD DDOP DDPOD>D DDOO D>DOPDD @DOP
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<string.h>

int main()
{
	char t[300000];
	char *p, *c;
	int i,m=0;
	scanf("%s", &t);
	p = t;
	c = p;
	m = strlen(p);
	for (i = 0; i < m; i++)
	{
		if (i == 0) {
			if (*p == '?')
				*p = 'D';
		}
		else if (i == m - 1) {
			if (*p == '?')
				*p = 'D';
		}

		if(*p=='?'){
			if (*(p - 1) == 'P')
				*p = 'D';
			else
				*p = 'D';
		}
		*(p++);
	}

	for (i = 0; i < m; i++)
	{
		printf("%c", *c);
		*(c++);
	}

	return 0;
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%s"
	.text
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	leaq	-299008(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$1040, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$0, -300036(%rbp)
	leaq	-300016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-300016(%rbp), %rax
	movq	%rax, -300032(%rbp)
	movq	-300032(%rbp), %rax
	movq	%rax, -300024(%rbp)
	movq	-300032(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -300036(%rbp)
	movl	$0, -300040(%rbp)
	jmp	.L2
.L7:
	cmpl	$0, -300040(%rbp)
	jne	.L3
	movq	-300032(%rbp), %rax
	movzbl	(%rax), %eax
	cmpb	$63, %al
	jne	.L4
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
	jmp	.L4
.L3:
	movl	-300036(%rbp), %eax
	subl	$1, %eax
	cmpl	%eax, -300040(%rbp)
	jne	.L4
	movq	-300032(%rbp), %rax
	movzbl	(%rax), %eax
	cmpb	$63, %al
	jne	.L4
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
.L4:
	movq	-300032(%rbp), %rax
	movzbl	(%rax), %eax
	cmpb	$63, %al
	jne	.L5
	movq	-300032(%rbp), %rax
	subq	$1, %rax
	movzbl	(%rax), %eax
	cmpb	$80, %al
	jne	.L6
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
	jmp	.L5
.L6:
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
.L5:
	movq	-300032(%rbp), %rax
	addq	$1, %rax
	movq	%rax, -300032(%rbp)
	addl	$1, -300040(%rbp)
.L2:
	movl	-300040(%rbp), %eax
	cmpl	-300036(%rbp), %eax
	jl	.L7
	movl	$0, -300040(%rbp)
	jmp	.L8
.L9:
	movq	-300024(%rbp), %rax
	movzbl	(%rax), %eax
	movsbl	%al, %eax
	movl	%eax, %edi
	call	putchar@PLT
	movq	-300024(%rbp), %rax
	addq	$1, %rax
	movq	%rax, -300024(%rbp)
	addl	$1, -300040(%rbp)
.L8:
	movl	-300040(%rbp), %eax
	cmpl	-300036(%rbp), %eax
	jl	.L9
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L11
	call	__stack_chk_fail@PLT
.L11:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.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.
train
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%s"
	.text
	.globl	main
	.type	main, @function
main:
.LFB0:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	leaq	-299008(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$1040, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$0, -300036(%rbp)
	leaq	-300016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-300016(%rbp), %rax
	movq	%rax, -300032(%rbp)
	movq	-300032(%rbp), %rax
	movq	%rax, -300024(%rbp)
	movq	-300032(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -300036(%rbp)
	movl	$0, -300040(%rbp)
	jmp	.L2
.L7:
	cmpl	$0, -300040(%rbp)
	jne	.L3
	movq	-300032(%rbp), %rax
	movzbl	(%rax), %eax
	cmpb	$63, %al
	jne	.L4
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
	jmp	.L4
.L3:
	movl	-300036(%rbp), %eax
	subl	$1, %eax
	cmpl	%eax, -300040(%rbp)
	jne	.L4
	movq	-300032(%rbp), %rax
	movzbl	(%rax), %eax
	cmpb	$63, %al
	jne	.L4
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
.L4:
	movq	-300032(%rbp), %rax
	movzbl	(%rax), %eax
	cmpb	$63, %al
	jne	.L5
	movq	-300032(%rbp), %rax
	subq	$1, %rax
	movzbl	(%rax), %eax
	cmpb	$80, %al
	jne	.L6
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
	jmp	.L5
.L6:
	movq	-300032(%rbp), %rax
	movb	$68, (%rax)
.L5:
	movq	-300032(%rbp), %rax
	addq	$1, %rax
	movq	%rax, -300032(%rbp)
	addl	$1, -300040(%rbp)
.L2:
	movl	-300040(%rbp), %eax
	cmpl	-300036(%rbp), %eax
	jl	.L7
	movl	$0, -300040(%rbp)
	jmp	.L8
.L9:
	movq	-300024(%rbp), %rax
	movzbl	(%rax), %eax
	movsbl	%al, %eax
	movl	%eax, %edi
	call	putchar@PLT
	movq	-300024(%rbp), %rax
	addq	$1, %rax
	movq	%rax, -300024(%rbp)
	addl	$1, -300040(%rbp)
.L8:
	movl	-300040(%rbp), %eax
	cmpl	-300036(%rbp), %eax
	jl	.L9
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L11
	call	__stack_chk_fail@PLT
.L11:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE0:
	.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:
