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(){
        int i, len;

        char str[200001];

        scanf("%s", str);

        len=strlen(str);

        for(i=0; i<len; i++){
                if(str[i]=='?'){
                        if(str[i-1]=='P'){
                                str[i]='D';
                        }else{
                                str[i]='D';
                        }
                }
        }

        printf("%s", str);

        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	-196608(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$3424, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	leaq	-200016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-200016(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -200020(%rbp)
	movl	$0, -200024(%rbp)
	jmp	.L2
.L5:
	movl	-200024(%rbp), %eax
	cltq
	movzbl	-200016(%rbp,%rax), %eax
	cmpb	$63, %al
	jne	.L3
	movl	-200024(%rbp), %eax
	subl	$1, %eax
	cltq
	movzbl	-200016(%rbp,%rax), %eax
	cmpb	$80, %al
	jne	.L4
	movl	-200024(%rbp), %eax
	cltq
	movb	$68, -200016(%rbp,%rax)
	jmp	.L3
.L4:
	movl	-200024(%rbp), %eax
	cltq
	movb	$68, -200016(%rbp,%rax)
.L3:
	addl	$1, -200024(%rbp)
.L2:
	movl	-200024(%rbp), %eax
	cmpl	-200020(%rbp), %eax
	jl	.L5
	leaq	-200016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L7
	call	__stack_chk_fail@PLT
.L7:
	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	%r12
	.cfi_def_cfa_offset 16
	.cfi_offset 12, -16
	pushq	%rbp
	.cfi_def_cfa_offset 24
	.cfi_offset 6, -24
	leaq	-196608(%rsp), %r11
	.cfi_def_cfa 11, 196632
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$3416, %rsp
	.cfi_def_cfa_offset 200048
	leaq	.LC0(%rip), %rbp
	movq	%rbp, %rdi
	movq	%fs:40, %rax
	movq	%rax, 200008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %r12
	movq	%r12, %rsi
	call	__isoc99_scanf@PLT
	movq	%r12, %rdi
	call	strlen@PLT
	testq	%rax, %rax
	je	.L2
	subl	$1, %eax
	movq	%r12, %rdx
	leaq	1(%rsp,%rax), %rax
	.p2align 4,,10
	.p2align 3
.L5:
	cmpb	$63, (%rdx)
	jne	.L3
	movb	$68, (%rdx)
.L3:
	addq	$1, %rdx
	cmpq	%rax, %rdx
	jne	.L5
.L2:
	xorl	%eax, %eax
	movq	%r12, %rdx
	movq	%rbp, %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	200008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L13
	addq	$200024, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbp
	.cfi_def_cfa_offset 16
	popq	%r12
	.cfi_def_cfa_offset 8
	ret
.L13:
	.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	%r12
	.cfi_def_cfa_offset 16
	.cfi_offset 12, -16
	pushq	%rbp
	.cfi_def_cfa_offset 24
	.cfi_offset 6, -24
	leaq	-196608(%rsp), %r11
	.cfi_def_cfa 11, 196632
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$3416, %rsp
	.cfi_def_cfa_offset 200048
	leaq	.LC0(%rip), %rbp
	movq	%rbp, %rdi
	movq	%fs:40, %rax
	movq	%rax, 200008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %r12
	movq	%r12, %rsi
	call	__isoc99_scanf@PLT
	movq	%r12, %rdi
	call	strlen@PLT
	testq	%rax, %rax
	je	.L2
	subl	$1, %eax
	movq	%r12, %rdx
	leaq	1(%rsp,%rax), %rax
	.p2align 4,,10
	.p2align 3
.L5:
	cmpb	$63, (%rdx)
	jne	.L3
	movb	$68, (%rdx)
.L3:
	addq	$1, %rdx
	cmpq	%rax, %rdx
	jne	.L5
.L2:
	xorl	%eax, %eax
	movq	%r12, %rdx
	movq	%rbp, %rsi
	movl	$1, %edi
	call	__printf_chk@PLT
	movq	200008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L13
	addq	$200024, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbp
	.cfi_def_cfa_offset 16
	popq	%r12
	.cfi_def_cfa_offset 8
	ret
.L13:
	.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(){
        int i, len;

        char str[200001];

        scanf("%s", str);

        len=strlen(str);

        for(i=0; i<len; i++){
                if(str[i]=='?'){
                        if(str[i-1]=='P'){
                                str[i]='D';
                        }else{
                                str[i]='D';
                        }
                }
        }

        printf("%s", str);

        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(){
        int i, len;

        char str[200001];

        scanf("%s", str);

        len=strlen(str);

        for(i=0; i<len; i++){
                if(str[i]=='?'){
                        if(str[i-1]=='P'){
                                str[i]='D';
                        }else{
                                str[i]='D';
                        }
                }
        }

        printf("%s", str);

        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	-196608(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$3424, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	leaq	-200016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-200016(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -200020(%rbp)
	movl	$0, -200024(%rbp)
	jmp	.L2
.L5:
	movl	-200024(%rbp), %eax
	cltq
	movzbl	-200016(%rbp,%rax), %eax
	cmpb	$63, %al
	jne	.L3
	movl	-200024(%rbp), %eax
	subl	$1, %eax
	cltq
	movzbl	-200016(%rbp,%rax), %eax
	cmpb	$80, %al
	jne	.L4
	movl	-200024(%rbp), %eax
	cltq
	movb	$68, -200016(%rbp,%rax)
	jmp	.L3
.L4:
	movl	-200024(%rbp), %eax
	cltq
	movb	$68, -200016(%rbp,%rax)
.L3:
	addl	$1, -200024(%rbp)
.L2:
	movl	-200024(%rbp), %eax
	cmpl	-200020(%rbp), %eax
	jl	.L5
	leaq	-200016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L7
	call	__stack_chk_fail@PLT
.L7:
	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	-196608(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$3424, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	leaq	-200016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-200016(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -200020(%rbp)
	movl	$0, -200024(%rbp)
	jmp	.L2
.L5:
	movl	-200024(%rbp), %eax
	cltq
	movzbl	-200016(%rbp,%rax), %eax
	cmpb	$63, %al
	jne	.L3
	movl	-200024(%rbp), %eax
	subl	$1, %eax
	cltq
	movzbl	-200016(%rbp,%rax), %eax
	cmpb	$80, %al
	jne	.L4
	movl	-200024(%rbp), %eax
	cltq
	movb	$68, -200016(%rbp,%rax)
	jmp	.L3
.L4:
	movl	-200024(%rbp), %eax
	cltq
	movb	$68, -200016(%rbp,%rax)
.L3:
	addl	$1, -200024(%rbp)
.L2:
	movl	-200024(%rbp), %eax
	cmpl	-200020(%rbp), %eax
	jl	.L5
	leaq	-200016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L7
	call	__stack_chk_fail@PLT
.L7:
	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:
