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>

int main()
{
	int m, f, r;
	char result;

	while(1)
	{
		scanf("%d %d %d", &m, &f, &r);
		if((m == -1) && (f == -1) && (r == -1))
		{
			break;
		}

		if((m == -1) || (f == -1))
		{
			result = 'F';
		}
		else if(80 <= (m + f))
		{
			result = 'A';
		}
		else if(65 <= (m + f))
		{
			result = 'B';
		}
		else if(50 <= (m + f))
		{
			result = 'C';
		}
		else if(30 <= (m + f))
		{
			result = (50 <= r) ? 'C' : 'D';
		}
		else
		{
			result = 'F';
		}
		printf("%c\n", result);
	}
	return 0;
}
```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%d %d %d"
.LC1:
	.string	"%c\n"
	.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
	subq	$32, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
.L13:
	leaq	-12(%rbp), %rcx
	leaq	-16(%rbp), %rdx
	leaq	-20(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-20(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L2
	movl	-16(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L2
	movl	-12(%rbp), %eax
	cmpl	$-1, %eax
	je	.L17
.L2:
	movl	-20(%rbp), %eax
	cmpl	$-1, %eax
	je	.L4
	movl	-16(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L5
.L4:
	movb	$70, -21(%rbp)
	jmp	.L6
.L5:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$79, %eax
	jle	.L7
	movb	$65, -21(%rbp)
	jmp	.L6
.L7:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$64, %eax
	jle	.L8
	movb	$66, -21(%rbp)
	jmp	.L6
.L8:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$49, %eax
	jle	.L9
	movb	$67, -21(%rbp)
	jmp	.L6
.L9:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$29, %eax
	jle	.L10
	movl	-12(%rbp), %eax
	cmpl	$49, %eax
	jle	.L11
	movl	$67, %eax
	jmp	.L12
.L11:
	movl	$68, %eax
.L12:
	movb	%al, -21(%rbp)
	jmp	.L6
.L10:
	movb	$70, -21(%rbp)
.L6:
	movsbl	-21(%rbp), %eax
	movl	%eax, %esi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	jmp	.L13
.L17:
	nop
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L15
	call	__stack_chk_fail@PLT
.L15:
	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	"%d %d %d"
.LC1:
	.string	"%c\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%r14
	.cfi_def_cfa_offset 16
	.cfi_offset 14, -16
	leaq	.LC1(%rip), %r14
	pushq	%r13
	.cfi_def_cfa_offset 24
	.cfi_offset 13, -24
	pushq	%r12
	.cfi_def_cfa_offset 32
	.cfi_offset 12, -32
	pushq	%rbp
	.cfi_def_cfa_offset 40
	.cfi_offset 6, -40
	pushq	%rbx
	.cfi_def_cfa_offset 48
	.cfi_offset 3, -48
	leaq	.LC0(%rip), %rbx
	subq	$32, %rsp
	.cfi_def_cfa_offset 80
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	20(%rsp), %r13
	leaq	16(%rsp), %r12
	leaq	12(%rsp), %rbp
	jmp	.L5
	.p2align 4,,10
	.p2align 3
.L2:
	movl	16(%rsp), %ecx
	movl	$70, %edx
	cmpl	$-1, %ecx
	je	.L4
	addl	%ecx, %eax
	movl	$65, %edx
	cmpl	$79, %eax
	jg	.L4
	movl	$66, %edx
	cmpl	$64, %eax
	jg	.L4
	movl	$67, %edx
	cmpl	$49, %eax
	jg	.L4
	movl	$70, %edx
	cmpl	$29, %eax
	jle	.L4
	xorl	%edx, %edx
	cmpl	$50, 20(%rsp)
	setl	%dl
	addl	$67, %edx
	.p2align 4,,10
	.p2align 3
.L4:
	movq	%r14, %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L5:
	movq	%r13, %rcx
	movq	%r12, %rdx
	movq	%rbp, %rsi
	movq	%rbx, %rdi
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	12(%rsp), %eax
	cmpl	$-1, %eax
	jne	.L2
	movl	16(%rsp), %eax
	andl	20(%rsp), %eax
	cmpl	$-1, %eax
	je	.L3
	movl	$70, %edx
	jmp	.L4
	.p2align 4,,10
	.p2align 3
.L3:
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L16
	addq	$32, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 48
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 40
	popq	%rbp
	.cfi_def_cfa_offset 32
	popq	%r12
	.cfi_def_cfa_offset 24
	popq	%r13
	.cfi_def_cfa_offset 16
	popq	%r14
	.cfi_def_cfa_offset 8
	ret
.L16:
	.cfi_restore_state
	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
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%d %d %d"
.LC1:
	.string	"%c\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%r14
	.cfi_def_cfa_offset 16
	.cfi_offset 14, -16
	leaq	.LC1(%rip), %r14
	pushq	%r13
	.cfi_def_cfa_offset 24
	.cfi_offset 13, -24
	pushq	%r12
	.cfi_def_cfa_offset 32
	.cfi_offset 12, -32
	pushq	%rbp
	.cfi_def_cfa_offset 40
	.cfi_offset 6, -40
	pushq	%rbx
	.cfi_def_cfa_offset 48
	.cfi_offset 3, -48
	leaq	.LC0(%rip), %rbx
	subq	$32, %rsp
	.cfi_def_cfa_offset 80
	movq	%fs:40, %rax
	movq	%rax, 24(%rsp)
	xorl	%eax, %eax
	leaq	20(%rsp), %r13
	leaq	16(%rsp), %r12
	leaq	12(%rsp), %rbp
	jmp	.L5
	.p2align 4,,10
	.p2align 3
.L2:
	movl	16(%rsp), %ecx
	movl	$70, %edx
	cmpl	$-1, %ecx
	je	.L4
	addl	%ecx, %eax
	movl	$65, %edx
	cmpl	$79, %eax
	jg	.L4
	movl	$66, %edx
	cmpl	$64, %eax
	jg	.L4
	movl	$67, %edx
	cmpl	$49, %eax
	jg	.L4
	movl	$70, %edx
	cmpl	$29, %eax
	jle	.L4
	xorl	%edx, %edx
	cmpl	$50, 20(%rsp)
	setl	%dl
	addl	$67, %edx
	.p2align 4,,10
	.p2align 3
.L4:
	movq	%r14, %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L5:
	movq	%r13, %rcx
	movq	%r12, %rdx
	movq	%rbp, %rsi
	movq	%rbx, %rdi
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	12(%rsp), %eax
	cmpl	$-1, %eax
	jne	.L2
	movl	16(%rsp), %eax
	andl	20(%rsp), %eax
	cmpl	$-1, %eax
	je	.L3
	movl	$70, %edx
	jmp	.L4
	.p2align 4,,10
	.p2align 3
.L3:
	movq	24(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L16
	addq	$32, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 48
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 40
	popq	%rbp
	.cfi_def_cfa_offset 32
	popq	%r12
	.cfi_def_cfa_offset 24
	popq	%r13
	.cfi_def_cfa_offset 16
	popq	%r14
	.cfi_def_cfa_offset 8
	ret
.L16:
	.cfi_restore_state
	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:

#include <stdio.h>

int main()
{
	int m, f, r;
	char result;

	while(1)
	{
		scanf("%d %d %d", &m, &f, &r);
		if((m == -1) && (f == -1) && (r == -1))
		{
			break;
		}

		if((m == -1) || (f == -1))
		{
			result = 'F';
		}
		else if(80 <= (m + f))
		{
			result = 'A';
		}
		else if(65 <= (m + f))
		{
			result = 'B';
		}
		else if(50 <= (m + f))
		{
			result = 'C';
		}
		else if(30 <= (m + f))
		{
			result = (50 <= r) ? 'C' : 'D';
		}
		else
		{
			result = 'F';
		}
		printf("%c\n", result);
	}
	return 0;
}

40 42 -1
34 30 -1
0 2 -1
-1 -1 -1
 40 42 -1
16 30 -1
0 2 -1
-1 -1 -1
 92 64 -1
16 50 -1
1 1 0
-1 -1 -1
 40 10 -1
16 30 -1
0 2 -1
-1 -1 -1
 40 12 -1
34 30 0
0 2 -1
-1 -1 -1
 40 53 -1
0 7 -1
0 1 -1
-1 -1 -1
 20 11 -2
16 30 0
1 0 -1
-1 -1 -1
 33 42 -1
34 30 0
0 2 -1
-1 -1 -1
 92 78 -1
16 85 -1
1 1 0
-1 -1 -1
 33 42 -1
46 30 0
0 2 -1
-1 -1 -1

A
C
F
 A
D
F
 A
B
F
 C
D
F
 C
C
F
 A
F
F
 D
D
F
 B
C
F
 A
A
F
 B
B
F

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>

int main()
{
	int m, f, r;
	char result;

	while(1)
	{
		scanf("%d %d %d", &m, &f, &r);
		if((m == -1) && (f == -1) && (r == -1))
		{
			break;
		}

		if((m == -1) || (f == -1))
		{
			result = 'F';
		}
		else if(80 <= (m + f))
		{
			result = 'A';
		}
		else if(65 <= (m + f))
		{
			result = 'B';
		}
		else if(50 <= (m + f))
		{
			result = 'C';
		}
		else if(30 <= (m + f))
		{
			result = (50 <= r) ? 'C' : 'D';
		}
		else
		{
			result = 'F';
		}
		printf("%c\n", result);
	}
	return 0;
}
```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%d %d %d"
.LC1:
	.string	"%c\n"
	.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
	subq	$32, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
.L13:
	leaq	-12(%rbp), %rcx
	leaq	-16(%rbp), %rdx
	leaq	-20(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-20(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L2
	movl	-16(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L2
	movl	-12(%rbp), %eax
	cmpl	$-1, %eax
	je	.L17
.L2:
	movl	-20(%rbp), %eax
	cmpl	$-1, %eax
	je	.L4
	movl	-16(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L5
.L4:
	movb	$70, -21(%rbp)
	jmp	.L6
.L5:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$79, %eax
	jle	.L7
	movb	$65, -21(%rbp)
	jmp	.L6
.L7:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$64, %eax
	jle	.L8
	movb	$66, -21(%rbp)
	jmp	.L6
.L8:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$49, %eax
	jle	.L9
	movb	$67, -21(%rbp)
	jmp	.L6
.L9:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$29, %eax
	jle	.L10
	movl	-12(%rbp), %eax
	cmpl	$49, %eax
	jle	.L11
	movl	$67, %eax
	jmp	.L12
.L11:
	movl	$68, %eax
.L12:
	movb	%al, -21(%rbp)
	jmp	.L6
.L10:
	movb	$70, -21(%rbp)
.L6:
	movsbl	-21(%rbp), %eax
	movl	%eax, %esi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	jmp	.L13
.L17:
	nop
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L15
	call	__stack_chk_fail@PLT
.L15:
	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	"%d %d %d"
.LC1:
	.string	"%c\n"
	.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
	subq	$32, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
.L13:
	leaq	-12(%rbp), %rcx
	leaq	-16(%rbp), %rdx
	leaq	-20(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-20(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L2
	movl	-16(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L2
	movl	-12(%rbp), %eax
	cmpl	$-1, %eax
	je	.L17
.L2:
	movl	-20(%rbp), %eax
	cmpl	$-1, %eax
	je	.L4
	movl	-16(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L5
.L4:
	movb	$70, -21(%rbp)
	jmp	.L6
.L5:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$79, %eax
	jle	.L7
	movb	$65, -21(%rbp)
	jmp	.L6
.L7:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$64, %eax
	jle	.L8
	movb	$66, -21(%rbp)
	jmp	.L6
.L8:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$49, %eax
	jle	.L9
	movb	$67, -21(%rbp)
	jmp	.L6
.L9:
	movl	-20(%rbp), %edx
	movl	-16(%rbp), %eax
	addl	%edx, %eax
	cmpl	$29, %eax
	jle	.L10
	movl	-12(%rbp), %eax
	cmpl	$49, %eax
	jle	.L11
	movl	$67, %eax
	jmp	.L12
.L11:
	movl	$68, %eax
.L12:
	movb	%al, -21(%rbp)
	jmp	.L6
.L10:
	movb	$70, -21(%rbp)
.L6:
	movsbl	-21(%rbp), %eax
	movl	%eax, %esi
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	jmp	.L13
.L17:
	nop
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L15
	call	__stack_chk_fail@PLT
.L15:
	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:
