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 rank[5][2] = {"A", "B", "C", "D", "F"};
    int flug;
    while (1) {
        scanf("%d%d%d", &m, &f, &r);
        if (m + f + r == -3)break;
        if (m + f >= 80) flug = 0;
        else if (m + f >= 65) flug = 1;
        else if (m + f >= 50) flug = 2;
        else if (m + f >= 30 && r >= 50) flug = 2;
        else if (m + f >= 30 && r <= 50) flug = 3;
        else flug = 4;
if(m==-1||f==-1) flug = 4;
        printf("%s\n", rank[flug]);
    }
    return 0;
}
```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%d%d%d"
	.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	$48, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movw	$65, -18(%rbp)
	movw	$66, -16(%rbp)
	movw	$67, -14(%rbp)
	movw	$68, -12(%rbp)
	movw	$70, -10(%rbp)
.L12:
	leaq	-28(%rbp), %rcx
	leaq	-32(%rbp), %rdx
	leaq	-36(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%eax, %edx
	movl	-28(%rbp), %eax
	addl	%edx, %eax
	cmpl	$-3, %eax
	je	.L16
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$79, %eax
	jle	.L4
	movl	$0, -24(%rbp)
	jmp	.L5
.L4:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$64, %eax
	jle	.L6
	movl	$1, -24(%rbp)
	jmp	.L5
.L6:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$49, %eax
	jle	.L7
	movl	$2, -24(%rbp)
	jmp	.L5
.L7:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$29, %eax
	jle	.L8
	movl	-28(%rbp), %eax
	cmpl	$49, %eax
	jle	.L8
	movl	$2, -24(%rbp)
	jmp	.L5
.L8:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$29, %eax
	jle	.L9
	movl	-28(%rbp), %eax
	cmpl	$50, %eax
	jg	.L9
	movl	$3, -24(%rbp)
	jmp	.L5
.L9:
	movl	$4, -24(%rbp)
.L5:
	movl	-36(%rbp), %eax
	cmpl	$-1, %eax
	je	.L10
	movl	-32(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L11
.L10:
	movl	$4, -24(%rbp)
.L11:
	leaq	-18(%rbp), %rdx
	movl	-24(%rbp), %eax
	cltq
	addq	%rax, %rax
	addq	%rdx, %rax
	movq	%rax, %rdi
	call	puts@PLT
	jmp	.L12
.L16:
	nop
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L14
	call	__stack_chk_fail@PLT
.L14:
	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
.LC1:
	.string	"%d%d%d"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%r13
	.cfi_def_cfa_offset 16
	.cfi_offset 13, -16
	pushq	%r12
	.cfi_def_cfa_offset 24
	.cfi_offset 12, -24
	pushq	%rbp
	.cfi_def_cfa_offset 32
	.cfi_offset 6, -32
	pushq	%rbx
	.cfi_def_cfa_offset 40
	.cfi_offset 3, -40
	leaq	.LC1(%rip), %rbx
	subq	$56, %rsp
	.cfi_def_cfa_offset 96
	movq	%fs:40, %rax
	movq	%rax, 40(%rsp)
	xorl	%eax, %eax
	leaq	20(%rsp), %r13
	leaq	16(%rsp), %r12
	movq	.LC0(%rip), %rax
	leaq	12(%rsp), %rbp
	movq	%rax, 24(%rsp)
	movl	$70, %eax
	movw	%ax, 32(%rsp)
	.p2align 4,,10
	.p2align 3
.L6:
	movq	%r13, %rcx
	movq	%r12, %rdx
	movq	%rbp, %rsi
	movq	%rbx, %rdi
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	12(%rsp), %esi
	movl	16(%rsp), %ecx
	movl	20(%rsp), %edi
	leal	(%rsi,%rcx), %edx
	leal	(%rdx,%rdi), %eax
	cmpl	$-3, %eax
	je	.L2
	xorl	%eax, %eax
	cmpl	$79, %edx
	jg	.L3
	movl	$1, %eax
	cmpl	$64, %edx
	jg	.L3
	movl	$2, %eax
	cmpl	$49, %edx
	jg	.L3
	cmpl	$29, %edx
	setg	%r8b
	cmpl	$49, %edi
	jle	.L13
	testb	%r8b, %r8b
	jne	.L3
.L13:
	xorl	%edx, %edx
	cmpl	$50, %edi
	movl	$4, %eax
	setle	%dl
	andl	%r8d, %edx
	subl	%edx, %eax
	.p2align 4,,10
	.p2align 3
.L3:
	cmpl	$-1, %ecx
	je	.L12
	cmpl	$-1, %esi
	je	.L12
	cltq
	addq	%rax, %rax
.L5:
	leaq	24(%rsp,%rax), %rdi
	call	puts@PLT
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L12:
	movl	$8, %eax
	jmp	.L5
	.p2align 4,,10
	.p2align 3
.L2:
	movq	40(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L19
	addq	$56, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 40
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 32
	popq	%rbp
	.cfi_def_cfa_offset 24
	popq	%r12
	.cfi_def_cfa_offset 16
	popq	%r13
	.cfi_def_cfa_offset 8
	ret
.L19:
	.cfi_restore_state
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE23:
	.size	main, .-main
	.section	.rodata.cst8,"aM",@progbits,8
	.align 8
.LC0:
	.value	65
	.value	66
	.value	67
	.value	68
	.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
.LC1:
	.string	"%d%d%d"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%r13
	.cfi_def_cfa_offset 16
	.cfi_offset 13, -16
	pushq	%r12
	.cfi_def_cfa_offset 24
	.cfi_offset 12, -24
	pushq	%rbp
	.cfi_def_cfa_offset 32
	.cfi_offset 6, -32
	pushq	%rbx
	.cfi_def_cfa_offset 40
	.cfi_offset 3, -40
	leaq	.LC1(%rip), %rbx
	subq	$56, %rsp
	.cfi_def_cfa_offset 96
	movq	%fs:40, %rax
	movq	%rax, 40(%rsp)
	xorl	%eax, %eax
	leaq	20(%rsp), %r13
	leaq	16(%rsp), %r12
	movq	.LC0(%rip), %rax
	leaq	12(%rsp), %rbp
	movq	%rax, 24(%rsp)
	movl	$70, %eax
	movw	%ax, 32(%rsp)
	.p2align 4,,10
	.p2align 3
.L6:
	movq	%r13, %rcx
	movq	%r12, %rdx
	movq	%rbp, %rsi
	movq	%rbx, %rdi
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	12(%rsp), %esi
	movl	16(%rsp), %ecx
	movl	20(%rsp), %edi
	leal	(%rsi,%rcx), %edx
	leal	(%rdx,%rdi), %eax
	cmpl	$-3, %eax
	je	.L2
	xorl	%eax, %eax
	cmpl	$79, %edx
	jg	.L3
	movl	$1, %eax
	cmpl	$64, %edx
	jg	.L3
	movl	$2, %eax
	cmpl	$49, %edx
	jg	.L3
	cmpl	$29, %edx
	setg	%r8b
	cmpl	$49, %edi
	jle	.L13
	testb	%r8b, %r8b
	jne	.L3
.L13:
	xorl	%edx, %edx
	cmpl	$50, %edi
	movl	$4, %eax
	setle	%dl
	andl	%r8d, %edx
	subl	%edx, %eax
	.p2align 4,,10
	.p2align 3
.L3:
	cmpl	$-1, %ecx
	je	.L12
	cmpl	$-1, %esi
	je	.L12
	cltq
	addq	%rax, %rax
.L5:
	leaq	24(%rsp,%rax), %rdi
	call	puts@PLT
	jmp	.L6
	.p2align 4,,10
	.p2align 3
.L12:
	movl	$8, %eax
	jmp	.L5
	.p2align 4,,10
	.p2align 3
.L2:
	movq	40(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L19
	addq	$56, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 40
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 32
	popq	%rbp
	.cfi_def_cfa_offset 24
	popq	%r12
	.cfi_def_cfa_offset 16
	popq	%r13
	.cfi_def_cfa_offset 8
	ret
.L19:
	.cfi_restore_state
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE23:
	.size	main, .-main
	.section	.rodata.cst8,"aM",@progbits,8
	.align 8
.LC0:
	.value	65
	.value	66
	.value	67
	.value	68
	.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 rank[5][2] = {"A", "B", "C", "D", "F"};
    int flug;
    while (1) {
        scanf("%d%d%d", &m, &f, &r);
        if (m + f + r == -3)break;
        if (m + f >= 80) flug = 0;
        else if (m + f >= 65) flug = 1;
        else if (m + f >= 50) flug = 2;
        else if (m + f >= 30 && r >= 50) flug = 2;
        else if (m + f >= 30 && r <= 50) flug = 3;
        else flug = 4;
if(m==-1||f==-1) flug = 4;
        printf("%s\n", rank[flug]);
    }
    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 rank[5][2] = {"A", "B", "C", "D", "F"};
    int flug;
    while (1) {
        scanf("%d%d%d", &m, &f, &r);
        if (m + f + r == -3)break;
        if (m + f >= 80) flug = 0;
        else if (m + f >= 65) flug = 1;
        else if (m + f >= 50) flug = 2;
        else if (m + f >= 30 && r >= 50) flug = 2;
        else if (m + f >= 30 && r <= 50) flug = 3;
        else flug = 4;
if(m==-1||f==-1) flug = 4;
        printf("%s\n", rank[flug]);
    }
    return 0;
}
```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%d%d%d"
	.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	$48, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movw	$65, -18(%rbp)
	movw	$66, -16(%rbp)
	movw	$67, -14(%rbp)
	movw	$68, -12(%rbp)
	movw	$70, -10(%rbp)
.L12:
	leaq	-28(%rbp), %rcx
	leaq	-32(%rbp), %rdx
	leaq	-36(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%eax, %edx
	movl	-28(%rbp), %eax
	addl	%edx, %eax
	cmpl	$-3, %eax
	je	.L16
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$79, %eax
	jle	.L4
	movl	$0, -24(%rbp)
	jmp	.L5
.L4:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$64, %eax
	jle	.L6
	movl	$1, -24(%rbp)
	jmp	.L5
.L6:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$49, %eax
	jle	.L7
	movl	$2, -24(%rbp)
	jmp	.L5
.L7:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$29, %eax
	jle	.L8
	movl	-28(%rbp), %eax
	cmpl	$49, %eax
	jle	.L8
	movl	$2, -24(%rbp)
	jmp	.L5
.L8:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$29, %eax
	jle	.L9
	movl	-28(%rbp), %eax
	cmpl	$50, %eax
	jg	.L9
	movl	$3, -24(%rbp)
	jmp	.L5
.L9:
	movl	$4, -24(%rbp)
.L5:
	movl	-36(%rbp), %eax
	cmpl	$-1, %eax
	je	.L10
	movl	-32(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L11
.L10:
	movl	$4, -24(%rbp)
.L11:
	leaq	-18(%rbp), %rdx
	movl	-24(%rbp), %eax
	cltq
	addq	%rax, %rax
	addq	%rdx, %rax
	movq	%rax, %rdi
	call	puts@PLT
	jmp	.L12
.L16:
	nop
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L14
	call	__stack_chk_fail@PLT
.L14:
	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"
	.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	$48, %rsp
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movw	$65, -18(%rbp)
	movw	$66, -16(%rbp)
	movw	$67, -14(%rbp)
	movw	$68, -12(%rbp)
	movw	$70, -10(%rbp)
.L12:
	leaq	-28(%rbp), %rcx
	leaq	-32(%rbp), %rdx
	leaq	-36(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%eax, %edx
	movl	-28(%rbp), %eax
	addl	%edx, %eax
	cmpl	$-3, %eax
	je	.L16
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$79, %eax
	jle	.L4
	movl	$0, -24(%rbp)
	jmp	.L5
.L4:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$64, %eax
	jle	.L6
	movl	$1, -24(%rbp)
	jmp	.L5
.L6:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$49, %eax
	jle	.L7
	movl	$2, -24(%rbp)
	jmp	.L5
.L7:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$29, %eax
	jle	.L8
	movl	-28(%rbp), %eax
	cmpl	$49, %eax
	jle	.L8
	movl	$2, -24(%rbp)
	jmp	.L5
.L8:
	movl	-36(%rbp), %edx
	movl	-32(%rbp), %eax
	addl	%edx, %eax
	cmpl	$29, %eax
	jle	.L9
	movl	-28(%rbp), %eax
	cmpl	$50, %eax
	jg	.L9
	movl	$3, -24(%rbp)
	jmp	.L5
.L9:
	movl	$4, -24(%rbp)
.L5:
	movl	-36(%rbp), %eax
	cmpl	$-1, %eax
	je	.L10
	movl	-32(%rbp), %eax
	cmpl	$-1, %eax
	jne	.L11
.L10:
	movl	$4, -24(%rbp)
.L11:
	leaq	-18(%rbp), %rdx
	movl	-24(%rbp), %eax
	cltq
	addq	%rax, %rax
	addq	%rdx, %rax
	movq	%rax, %rdi
	call	puts@PLT
	jmp	.L12
.L16:
	nop
	movl	$0, %eax
	movq	-8(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L14
	call	__stack_chk_fail@PLT
.L14:
	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:
