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"

void main(void){
  long H,W;
  scanf("%ld %ld",&H,&W);
  if(H==1||W==1){
    printf("1\n");
  }
  else if(H*W%2){
    printf("%ld\n",H*W/2+1);
  }
  else
    printf("%ld\n",H*W/2);
}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%ld %ld"
.LC1:
	.string	"1"
.LC2:
	.string	"%ld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$40, %rsp
	.cfi_def_cfa_offset 48
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	16(%rsp), %rdx
	leaq	8(%rsp), %rsi
	call	__isoc99_scanf@PLT
	movq	8(%rsp), %rax
	cmpq	$1, %rax
	je	.L2
	movq	16(%rsp), %rdx
	cmpq	$1, %rdx
	je	.L2
	imulq	%rdx, %rax
	movl	$2, %esi
	movq	%rax, %rcx
	cqto
	idivq	%rsi
	andb	$1, %cl
	jne	.L12
	movq	%rax, %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L1:
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L13
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L12:
	.cfi_restore_state
	leaq	1(%rax), %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L1
.L2:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L1
.L13:
	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	"%ld %ld"
.LC1:
	.string	"1"
.LC2:
	.string	"%ld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$40, %rsp
	.cfi_def_cfa_offset 48
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	16(%rsp), %rdx
	leaq	8(%rsp), %rsi
	call	__isoc99_scanf@PLT
	movq	8(%rsp), %rax
	cmpq	$1, %rax
	je	.L2
	movq	16(%rsp), %rdx
	cmpq	$1, %rdx
	je	.L2
	imulq	%rdx, %rax
	movl	$2, %esi
	movq	%rax, %rcx
	cqto
	idivq	%rsi
	andb	$1, %cl
	jne	.L12
	movq	%rax, %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L1:
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L13
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L12:
	.cfi_restore_state
	leaq	1(%rax), %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L1
.L2:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L1
.L13:
	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	"%ld %ld"
.LC1:
	.string	"1"
.LC2:
	.string	"%ld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$40, %rsp
	.cfi_def_cfa_offset 48
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	16(%rsp), %rdx
	leaq	8(%rsp), %rsi
	call	__isoc99_scanf@PLT
	movq	8(%rsp), %rax
	cmpq	$1, %rax
	je	.L2
	movq	16(%rsp), %rdx
	cmpq	$1, %rdx
	je	.L2
	imulq	%rdx, %rax
	movl	$2, %esi
	movq	%rax, %rcx
	cqto
	idivq	%rsi
	andb	$1, %cl
	jne	.L12
	movq	%rax, %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L1:
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L13
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L12:
	.cfi_restore_state
	leaq	1(%rax), %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L1
.L2:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L1
.L13:
	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"

void main(void){
  long H,W;
  scanf("%ld %ld",&H,&W);
  if(H==1||W==1){
    printf("1\n");
  }
  else if(H*W%2){
    printf("%ld\n",H*W/2+1);
  }
  else
    printf("%ld\n",H*W/2);
}
```
Given the following C code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
#include "stdio.h"

void main(void){
  long H,W;
  scanf("%ld %ld",&H,&W);
  if(H==1||W==1){
    printf("1\n");
  }
  else if(H*W%2){
    printf("%ld\n",H*W/2+1);
  }
  else
    printf("%ld\n",H*W/2);
}
```

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:

7 0
 1001000000 1000000000
 6 5
 1001000000 1100000000
 3 5
 1001000010 1100000000
 3 6
 1001000010 1100100000
 1001000011 1100100000
 3 1

0
 500500000000000000
 15
 550550000000000000
 8
 550550005500000000
 9
 550600055500500000
 550600056050550000
 1

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"

void main(void){
  long H,W;
  scanf("%ld %ld",&H,&W);
  if(H==1||W==1){
    printf("1\n");
  }
  else if(H*W%2){
    printf("%ld\n",H*W/2+1);
  }
  else
    printf("%ld\n",H*W/2);
}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%ld %ld"
.LC1:
	.string	"1"
.LC2:
	.string	"%ld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$40, %rsp
	.cfi_def_cfa_offset 48
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	16(%rsp), %rdx
	leaq	8(%rsp), %rsi
	call	__isoc99_scanf@PLT
	movq	8(%rsp), %rax
	cmpq	$1, %rax
	je	.L2
	movq	16(%rsp), %rdx
	cmpq	$1, %rdx
	je	.L2
	imulq	%rdx, %rax
	movl	$2, %esi
	movq	%rax, %rcx
	cqto
	idivq	%rsi
	andb	$1, %cl
	jne	.L12
	movq	%rax, %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L1:
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L13
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L12:
	.cfi_restore_state
	leaq	1(%rax), %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L1
.L2:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L1
.L13:
	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	"%ld %ld"
.LC1:
	.string	"1"
.LC2:
	.string	"%ld\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	subq	$40, %rsp
	.cfi_def_cfa_offset 48
	leaq	.LC0(%rip), %rdi
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	16(%rsp), %rdx
	leaq	8(%rsp), %rsi
	call	__isoc99_scanf@PLT
	movq	8(%rsp), %rax
	cmpq	$1, %rax
	je	.L2
	movq	16(%rsp), %rdx
	cmpq	$1, %rdx
	je	.L2
	imulq	%rdx, %rax
	movl	$2, %esi
	movq	%rax, %rcx
	cqto
	idivq	%rsi
	andb	$1, %cl
	jne	.L12
	movq	%rax, %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L1:
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L13
	addq	$40, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 8
	ret
.L12:
	.cfi_restore_state
	leaq	1(%rax), %rdx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L1
.L2:
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
	jmp	.L1
.L13:
	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:
```