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>
#include <stdlib.h>
#include <math.h>
#include <limits.h>
#include <string.h>
int main()
{
   char S[4];
   scanf("%s",S);
   char str[2]={'\0'};
  strncpy(str, S+2,2);
  int B =  (str[0] - '0') * 10 + (str[1] - '0');
  str[0]='\0';
  strncpy(str, S,2);
  int A = (str[0] - '0') * 10 + (str[1] - '0');
  int YYMM=0;
  int MMYY=0;
  if ( 1<=A && A<=12){
    MMYY++;
  }
  if (1<=B && B<=12){
    YYMM++;
  }
  if (YYMM==1 && MMYY==0)printf("YYMM");
  else if (YYMM==0 && MMYY==1)printf("MMYY");
  else if (YYMM==1 && MMYY==1)printf("AMBIGUOUS");
  else printf("NA");

    return 0;
}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"YYMM"
.LC2:
	.string	"MMYY"
.LC3:
	.string	"AMBIGUOUS"
.LC4:
	.string	"NA"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$24, %rsp
	.cfi_def_cfa_offset 48
	movq	%fs:40, %rax
	movq	%rax, 8(%rsp)
	xorl	%eax, %eax
	leaq	4(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	leaq	6(%rsp), %rsi
	leaq	2(%rsp), %rdi
	movl	$2, %edx
	call	strncpy@PLT
	movq	%rbp, %rsi
	movq	%rax, %rdi
	movsbl	2(%rsp), %eax
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-48(%rax,%rdx,2), %ebx
	movl	$2, %edx
	call	strncpy@PLT
	movsbl	2(%rsp), %eax
	subl	$1, %ebx
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-49(%rax,%rdx,2), %eax
	cmpl	$11, %ebx
	ja	.L16
	cmpl	$11, %eax
	jbe	.L17
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L4:
	movq	8(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L18
	addq	$24, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L16:
	.cfi_restore_state
	cmpl	$11, %eax
	jbe	.L19
	leaq	.LC4(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L19:
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L17:
	leaq	.LC3(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L18:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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	"%s"
.LC1:
	.string	"YYMM"
.LC2:
	.string	"MMYY"
.LC3:
	.string	"AMBIGUOUS"
.LC4:
	.string	"NA"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$24, %rsp
	.cfi_def_cfa_offset 48
	movq	%fs:40, %rax
	movq	%rax, 8(%rsp)
	xorl	%eax, %eax
	leaq	4(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	leaq	6(%rsp), %rsi
	leaq	2(%rsp), %rdi
	movl	$2, %edx
	call	strncpy@PLT
	movq	%rbp, %rsi
	movq	%rax, %rdi
	movsbl	2(%rsp), %eax
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-48(%rax,%rdx,2), %ebx
	movl	$2, %edx
	call	strncpy@PLT
	movsbl	2(%rsp), %eax
	subl	$1, %ebx
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-49(%rax,%rdx,2), %eax
	cmpl	$11, %ebx
	ja	.L16
	cmpl	$11, %eax
	jbe	.L17
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L4:
	movq	8(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L18
	addq	$24, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L16:
	.cfi_restore_state
	cmpl	$11, %eax
	jbe	.L19
	leaq	.LC4(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L19:
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L17:
	leaq	.LC3(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L18:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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	"%s"
.LC1:
	.string	"YYMM"
.LC2:
	.string	"MMYY"
.LC3:
	.string	"AMBIGUOUS"
.LC4:
	.string	"NA"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$24, %rsp
	.cfi_def_cfa_offset 48
	movq	%fs:40, %rax
	movq	%rax, 8(%rsp)
	xorl	%eax, %eax
	leaq	4(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	leaq	6(%rsp), %rsi
	leaq	2(%rsp), %rdi
	movl	$2, %edx
	call	strncpy@PLT
	movq	%rbp, %rsi
	movq	%rax, %rdi
	movsbl	2(%rsp), %eax
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-48(%rax,%rdx,2), %ebx
	movl	$2, %edx
	call	strncpy@PLT
	movsbl	2(%rsp), %eax
	subl	$1, %ebx
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-49(%rax,%rdx,2), %eax
	cmpl	$11, %ebx
	ja	.L16
	cmpl	$11, %eax
	jbe	.L17
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L4:
	movq	8(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L18
	addq	$24, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L16:
	.cfi_restore_state
	cmpl	$11, %eax
	jbe	.L19
	leaq	.LC4(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L19:
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L17:
	leaq	.LC3(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L18:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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>
#include <stdlib.h>
#include <math.h>
#include <limits.h>
#include <string.h>
int main()
{
   char S[4];
   scanf("%s",S);
   char str[2]={'\0'};
  strncpy(str, S+2,2);
  int B =  (str[0] - '0') * 10 + (str[1] - '0');
  str[0]='\0';
  strncpy(str, S,2);
  int A = (str[0] - '0') * 10 + (str[1] - '0');
  int YYMM=0;
  int MMYY=0;
  if ( 1<=A && A<=12){
    MMYY++;
  }
  if (1<=B && B<=12){
    YYMM++;
  }
  if (YYMM==1 && MMYY==0)printf("YYMM");
  else if (YYMM==0 && MMYY==1)printf("MMYY");
  else if (YYMM==1 && MMYY==1)printf("AMBIGUOUS");
  else printf("NA");

    return 0;
}
```
Given the following C code, your task is to generate highly optimized x86-64 assembly code.
C Code:

```c
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <limits.h>
#include <string.h>
int main()
{
   char S[4];
   scanf("%s",S);
   char str[2]={'\0'};
  strncpy(str, S+2,2);
  int B =  (str[0] - '0') * 10 + (str[1] - '0');
  str[0]='\0';
  strncpy(str, S,2);
  int A = (str[0] - '0') * 10 + (str[1] - '0');
  int YYMM=0;
  int MMYY=0;
  if ( 1<=A && A<=12){
    MMYY++;
  }
  if (1<=B && B<=12){
    YYMM++;
  }
  if (YYMM==1 && MMYY==0)printf("YYMM");
  else if (YYMM==0 && MMYY==1)printf("MMYY");
  else if (YYMM==1 && MMYY==1)printf("AMBIGUOUS");
  else printf("NA");

    return 0;
}
```

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:

3367
 2206
 1291
 1211
 2352
 2340
 2265
 2454
 2024
 2460

NA YYMM MMYY AMBIGUOUS NA NA NA NA NA NA
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>
#include <stdlib.h>
#include <math.h>
#include <limits.h>
#include <string.h>
int main()
{
   char S[4];
   scanf("%s",S);
   char str[2]={'\0'};
  strncpy(str, S+2,2);
  int B =  (str[0] - '0') * 10 + (str[1] - '0');
  str[0]='\0';
  strncpy(str, S,2);
  int A = (str[0] - '0') * 10 + (str[1] - '0');
  int YYMM=0;
  int MMYY=0;
  if ( 1<=A && A<=12){
    MMYY++;
  }
  if (1<=B && B<=12){
    YYMM++;
  }
  if (YYMM==1 && MMYY==0)printf("YYMM");
  else if (YYMM==0 && MMYY==1)printf("MMYY");
  else if (YYMM==1 && MMYY==1)printf("AMBIGUOUS");
  else printf("NA");

    return 0;
}
```

Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"%s"
.LC1:
	.string	"YYMM"
.LC2:
	.string	"MMYY"
.LC3:
	.string	"AMBIGUOUS"
.LC4:
	.string	"NA"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$24, %rsp
	.cfi_def_cfa_offset 48
	movq	%fs:40, %rax
	movq	%rax, 8(%rsp)
	xorl	%eax, %eax
	leaq	4(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	leaq	6(%rsp), %rsi
	leaq	2(%rsp), %rdi
	movl	$2, %edx
	call	strncpy@PLT
	movq	%rbp, %rsi
	movq	%rax, %rdi
	movsbl	2(%rsp), %eax
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-48(%rax,%rdx,2), %ebx
	movl	$2, %edx
	call	strncpy@PLT
	movsbl	2(%rsp), %eax
	subl	$1, %ebx
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-49(%rax,%rdx,2), %eax
	cmpl	$11, %ebx
	ja	.L16
	cmpl	$11, %eax
	jbe	.L17
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L4:
	movq	8(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L18
	addq	$24, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L16:
	.cfi_restore_state
	cmpl	$11, %eax
	jbe	.L19
	leaq	.LC4(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L19:
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L17:
	leaq	.LC3(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L18:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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	"%s"
.LC1:
	.string	"YYMM"
.LC2:
	.string	"MMYY"
.LC3:
	.string	"AMBIGUOUS"
.LC4:
	.string	"NA"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB51:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	leaq	.LC0(%rip), %rdi
	pushq	%rbx
	.cfi_def_cfa_offset 24
	.cfi_offset 3, -24
	subq	$24, %rsp
	.cfi_def_cfa_offset 48
	movq	%fs:40, %rax
	movq	%rax, 8(%rsp)
	xorl	%eax, %eax
	leaq	4(%rsp), %rbp
	movq	%rbp, %rsi
	call	__isoc99_scanf@PLT
	leaq	6(%rsp), %rsi
	leaq	2(%rsp), %rdi
	movl	$2, %edx
	call	strncpy@PLT
	movq	%rbp, %rsi
	movq	%rax, %rdi
	movsbl	2(%rsp), %eax
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-48(%rax,%rdx,2), %ebx
	movl	$2, %edx
	call	strncpy@PLT
	movsbl	2(%rsp), %eax
	subl	$1, %ebx
	leal	-240(%rax,%rax,4), %edx
	movsbl	3(%rsp), %eax
	leal	-49(%rax,%rdx,2), %eax
	cmpl	$11, %ebx
	ja	.L16
	cmpl	$11, %eax
	jbe	.L17
	leaq	.LC1(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
.L4:
	movq	8(%rsp), %rax
	subq	%fs:40, %rax
	jne	.L18
	addq	$24, %rsp
	.cfi_remember_state
	.cfi_def_cfa_offset 24
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	ret
.L16:
	.cfi_restore_state
	cmpl	$11, %eax
	jbe	.L19
	leaq	.LC4(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L19:
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L17:
	leaq	.LC3(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	jmp	.L4
.L18:
	call	__stack_chk_fail@PLT
	.cfi_endproc
.LFE51:
	.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:
```