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, j, k, N;
    char S[210000];
    long long ans = 0, num=0;

    scanf("%s", &S);
    N = strlen(S);

    for(i=N-1; i>=0; i--){
        if(S[i]=='W'){
            num++;
        }else if(S[i]=='B'){
            ans+=num;
        }
    }

    printf("%lld", ans);

    return 0;
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%s"
.LC1:
	.string	"%lld"
	.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	-208896(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$1152, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movq	$0, -210032(%rbp)
	movq	$0, -210024(%rbp)
	leaq	-210016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-210016(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -210036(%rbp)
	movl	-210036(%rbp), %eax
	subl	$1, %eax
	movl	%eax, -210040(%rbp)
	jmp	.L2
.L5:
	movl	-210040(%rbp), %eax
	cltq
	movzbl	-210016(%rbp,%rax), %eax
	cmpb	$87, %al
	jne	.L3
	addq	$1, -210024(%rbp)
	jmp	.L4
.L3:
	movl	-210040(%rbp), %eax
	cltq
	movzbl	-210016(%rbp,%rax), %eax
	cmpb	$66, %al
	jne	.L4
	movq	-210024(%rbp), %rax
	addq	%rax, -210032(%rbp)
.L4:
	subl	$1, -210040(%rbp)
.L2:
	cmpl	$0, -210040(%rbp)
	jns	.L5
	movq	-210032(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC1(%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"
.LC1:
	.string	"%lld"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	-208896(%rsp), %r11
	.cfi_def_cfa 11, 208912
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$1120, %rsp
	.cfi_def_cfa_offset 210032
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 210008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	testl	%eax, %eax
	je	.L7
	subl	$1, %eax
	xorl	%ecx, %ecx
	xorl	%r8d, %r8d
	cltq
	jmp	.L5
	.p2align 4,,10
	.p2align 3
.L3:
	cmpb	$66, %dl
	leaq	(%r8,%rcx), %rsi
	cmove	%rsi, %r8
	subq	$1, %rax
	cmpl	$-1, %eax
	je	.L2
.L5:
	movzbl	(%rbx,%rax), %edx
	cmpb	$87, %dl
	jne	.L3
	subq	$1, %rax
	addq	$1, %rcx
	cmpl	$-1, %eax
	jne	.L5
.L2:
	xorl	%eax, %eax
	movq	%r8, %rdx
	movl	$1, %edi
	leaq	.LC1(%rip), %rsi
	call	__printf_chk@PLT
	movq	210008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L11
	addq	$210016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 8
	ret
.L7:
	.cfi_restore_state
	xorl	%r8d, %r8d
	jmp	.L2
.L11:
	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"
.LC1:
	.string	"%lld"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB35:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	-208896(%rsp), %r11
	.cfi_def_cfa 11, 208912
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	.cfi_def_cfa_register 7
	subq	$1120, %rsp
	.cfi_def_cfa_offset 210032
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 210008(%rsp)
	xorl	%eax, %eax
	movq	%rsp, %rbx
	movq	%rbx, %rsi
	call	__isoc99_scanf@PLT
	movq	%rbx, %rdi
	call	strlen@PLT
	testl	%eax, %eax
	je	.L7
	subl	$1, %eax
	xorl	%ecx, %ecx
	xorl	%r8d, %r8d
	cltq
	jmp	.L5
	.p2align 4,,10
	.p2align 3
.L3:
	cmpb	$66, %dl
	leaq	(%r8,%rcx), %rsi
	cmove	%rsi, %r8
	subq	$1, %rax
	cmpl	$-1, %eax
	je	.L2
.L5:
	movzbl	(%rbx,%rax), %edx
	cmpb	$87, %dl
	jne	.L3
	subq	$1, %rax
	addq	$1, %rcx
	cmpl	$-1, %eax
	jne	.L5
.L2:
	xorl	%eax, %eax
	movq	%r8, %rdx
	movl	$1, %edi
	leaq	.LC1(%rip), %rsi
	call	__printf_chk@PLT
	movq	210008(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L11
	addq	$210016, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 8
	ret
.L7:
	.cfi_restore_state
	xorl	%r8d, %r8d
	jmp	.L2
.L11:
	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, j, k, N;
    char S[210000];
    long long ans = 0, num=0;

    scanf("%s", &S);
    N = strlen(S);

    for(i=N-1; i>=0; i--){
        if(S[i]=='W'){
            num++;
        }else if(S[i]=='B'){
            ans+=num;
        }
    }

    printf("%lld", ans);

    return 0;
}
WBWBWB
 BBX
 WBWBVB
 BXB
 WBWBUB
 BYB
 WBWBUC
 CYB
 WBWBTC
 CYA

3 0 1 0 1 0 1 0 1 0
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, j, k, N;
    char S[210000];
    long long ans = 0, num=0;

    scanf("%s", &S);
    N = strlen(S);

    for(i=N-1; i>=0; i--){
        if(S[i]=='W'){
            num++;
        }else if(S[i]=='B'){
            ans+=num;
        }
    }

    printf("%lld", ans);

    return 0;
}```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%s"
.LC1:
	.string	"%lld"
	.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	-208896(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$1152, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movq	$0, -210032(%rbp)
	movq	$0, -210024(%rbp)
	leaq	-210016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-210016(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -210036(%rbp)
	movl	-210036(%rbp), %eax
	subl	$1, %eax
	movl	%eax, -210040(%rbp)
	jmp	.L2
.L5:
	movl	-210040(%rbp), %eax
	cltq
	movzbl	-210016(%rbp,%rax), %eax
	cmpb	$87, %al
	jne	.L3
	addq	$1, -210024(%rbp)
	jmp	.L4
.L3:
	movl	-210040(%rbp), %eax
	cltq
	movzbl	-210016(%rbp,%rax), %eax
	cmpb	$66, %al
	jne	.L4
	movq	-210024(%rbp), %rax
	addq	%rax, -210032(%rbp)
.L4:
	subl	$1, -210040(%rbp)
.L2:
	cmpl	$0, -210040(%rbp)
	jns	.L5
	movq	-210032(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC1(%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"
.LC1:
	.string	"%lld"
	.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	-208896(%rsp), %r11
.LPSRL0:
	subq	$4096, %rsp
	orq	$0, (%rsp)
	cmpq	%r11, %rsp
	jne	.LPSRL0
	subq	$1152, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movq	$0, -210032(%rbp)
	movq	$0, -210024(%rbp)
	leaq	-210016(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-210016(%rbp), %rax
	movq	%rax, %rdi
	call	strlen@PLT
	movl	%eax, -210036(%rbp)
	movl	-210036(%rbp), %eax
	subl	$1, %eax
	movl	%eax, -210040(%rbp)
	jmp	.L2
.L5:
	movl	-210040(%rbp), %eax
	cltq
	movzbl	-210016(%rbp,%rax), %eax
	cmpb	$87, %al
	jne	.L3
	addq	$1, -210024(%rbp)
	jmp	.L4
.L3:
	movl	-210040(%rbp), %eax
	cltq
	movzbl	-210016(%rbp,%rax), %eax
	cmpb	$66, %al
	jne	.L4
	movq	-210024(%rbp), %rax
	addq	%rax, -210032(%rbp)
.L4:
	subl	$1, -210040(%rbp)
.L2:
	cmpl	$0, -210040(%rbp)
	jns	.L5
	movq	-210032(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC1(%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:
