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 argc, char const *argv[]) {

  int N, M;
  scanf("%d", &N);
  scanf("%d", &M);

  int L[M + 1];
  int R[M + 1];
  int tmp[M];

  int cnt[N];
  for (int i = 0; i < N; i++) {
    cnt[i] = 0;
  }

  int min = 0;
  int max = N;

  for (int i = 0; i < M; i++) {
    scanf("%d", L + i);
    scanf("%d", R + i);

    if (L[i] > min) {
      min = L[i];
    }
    if (R[i] < max) {
      max = R[i];
    }

    if (min > max) {
      printf("0\n");
      return 0;
    }
  }

  int gate = max - min + 1;
  printf("%d\n", gate);

  return 0;
}
```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%d"
.LC1:
	.string	"0"
.LC2:
	.string	"%d\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
	pushq	%r15
	pushq	%r14
	pushq	%r13
	pushq	%r12
	pushq	%rbx
	subq	$232, %rsp
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movl	%edi, -164(%rbp)
	movq	%rsi, -176(%rbp)
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	movq	%rsp, %rax
	movq	%rax, %rbx
	leaq	-148(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-144(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-144(%rbp), %eax
	leal	1(%rax), %edx
	movslq	%edx, %rax
	subq	$1, %rax
	movq	%rax, -120(%rbp)
	movslq	%edx, %rax
	movq	%rax, %r12
	movl	$0, %r13d
	movslq	%edx, %rax
	movq	%rax, %r14
	movl	$0, %r15d
	movslq	%edx, %rax
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %esi
	movl	$0, %edx
	divq	%rsi
	imulq	$16, %rax, %rdx
	movq	%rdx, %rax
	andq	$-4096, %rax
	movq	%rsp, %rcx
	subq	%rax, %rcx
.L2:
	cmpq	%rcx, %rsp
	je	.L3
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L2
.L3:
	movq	%rdx, %rax
	andl	$4095, %eax
	subq	%rax, %rsp
	movq	%rdx, %rax
	andl	$4095, %eax
	testq	%rax, %rax
	je	.L4
	movq	%rdx, %rax
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L4:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -112(%rbp)
	movl	-144(%rbp), %eax
	leal	1(%rax), %edx
	movslq	%edx, %rax
	subq	$1, %rax
	movq	%rax, -104(%rbp)
	movslq	%edx, %rax
	movq	%rax, -192(%rbp)
	movq	$0, -184(%rbp)
	movslq	%edx, %rax
	movq	%rax, -208(%rbp)
	movq	$0, -200(%rbp)
	movslq	%edx, %rax
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %edi
	movl	$0, %edx
	divq	%rdi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L5:
	cmpq	%rdx, %rsp
	je	.L6
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L5
.L6:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L7
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L7:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -96(%rbp)
	movl	-144(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -88(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -224(%rbp)
	movq	$0, -216(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -240(%rbp)
	movq	$0, -232(%rbp)
	cltq
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %esi
	movl	$0, %edx
	divq	%rsi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L8:
	cmpq	%rdx, %rsp
	je	.L9
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L8
.L9:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L10
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L10:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -80(%rbp)
	movl	-148(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -72(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -256(%rbp)
	movq	$0, -248(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -272(%rbp)
	movq	$0, -264(%rbp)
	cltq
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %edi
	movl	$0, %edx
	divq	%rdi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L11:
	cmpq	%rdx, %rsp
	je	.L12
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L11
.L12:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L13
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L13:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -64(%rbp)
	movl	$0, -140(%rbp)
	jmp	.L14
.L15:
	movq	-64(%rbp), %rax
	movl	-140(%rbp), %edx
	movslq	%edx, %rdx
	movl	$0, (%rax,%rdx,4)
	addl	$1, -140(%rbp)
.L14:
	movl	-148(%rbp), %eax
	cmpl	%eax, -140(%rbp)
	jl	.L15
	movl	$0, -136(%rbp)
	movl	-148(%rbp), %eax
	movl	%eax, -132(%rbp)
	movl	$0, -128(%rbp)
	jmp	.L16
.L21:
	movl	-128(%rbp), %eax
	cltq
	leaq	0(,%rax,4), %rdx
	movq	-112(%rbp), %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-128(%rbp), %eax
	cltq
	leaq	0(,%rax,4), %rdx
	movq	-96(%rbp), %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movq	-112(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	cmpl	%eax, -136(%rbp)
	jge	.L17
	movq	-112(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	movl	%eax, -136(%rbp)
.L17:
	movq	-96(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	cmpl	%eax, -132(%rbp)
	jle	.L18
	movq	-96(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	movl	%eax, -132(%rbp)
.L18:
	movl	-136(%rbp), %eax
	cmpl	-132(%rbp), %eax
	jle	.L19
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	call	puts@PLT
	movl	$0, %eax
	jmp	.L20
.L19:
	addl	$1, -128(%rbp)
.L16:
	movl	-144(%rbp), %eax
	cmpl	%eax, -128(%rbp)
	jl	.L21
	movl	-132(%rbp), %eax
	subl	-136(%rbp), %eax
	addl	$1, %eax
	movl	%eax, -124(%rbp)
	movl	-124(%rbp), %eax
	movl	%eax, %esi
	leaq	.LC2(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
.L20:
	movq	%rbx, %rsp
	movq	-56(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L23
	call	__stack_chk_fail@PLT
.L23:
	leaq	-40(%rbp), %rsp
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.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"
.LC1:
	.string	"0"
.LC2:
	.string	"%d\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r15
	pushq	%r14
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	leaq	.LC0(%rip), %r14
	leaq	-64(%rbp), %rsi
	pushq	%r13
	movq	%r14, %rdi
	pushq	%r12
	pushq	%rbx
	subq	$40, %rsp
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	leaq	-60(%rbp), %rsi
	movq	%r14, %rdi
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	-60(%rbp), %r12d
	movq	%rsp, %rcx
	leal	1(%r12), %eax
	cltq
	leaq	15(,%rax,4), %rax
	movq	%rax, %rsi
	movq	%rax, %rdx
	andq	$-4096, %rsi
	andq	$-16, %rdx
	subq	%rsi, %rcx
	cmpq	%rcx, %rsp
	je	.L3
.L30:
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	cmpq	%rcx, %rsp
	jne	.L30
.L3:
	andl	$4095, %edx
	subq	%rdx, %rsp
	testq	%rdx, %rdx
	jne	.L31
.L4:
	movq	%rax, %rdx
	movq	%rsp, %rcx
	andq	$-4096, %rax
	movq	%rsp, %r13
	andq	$-16, %rdx
	subq	%rax, %rcx
.L5:
	cmpq	%rcx, %rsp
	je	.L6
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L5
.L31:
	orq	$0, -8(%rsp,%rdx)
	jmp	.L4
.L6:
	andl	$4095, %edx
	subq	%rdx, %rsp
	testq	%rdx, %rdx
	jne	.L32
.L7:
	movslq	-64(%rbp), %rdx
	movq	%rsp, %rsi
	movq	%rsp, %r15
	leaq	15(,%rdx,4), %rax
	movq	%rdx, %rbx
	movq	%rax, %rcx
	andq	$-4096, %rax
	andq	$-16, %rcx
	subq	%rax, %rsi
.L8:
	cmpq	%rsi, %rsp
	je	.L9
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L8
.L32:
	orq	$0, -8(%rsp,%rdx)
	jmp	.L7
.L9:
	andl	$4095, %ecx
	subq	%rcx, %rsp
	testq	%rcx, %rcx
	je	.L10
	orq	$0, -8(%rsp,%rcx)
.L10:
	movq	%rsp, %rdi
	testl	%ebx, %ebx
	jle	.L11
	salq	$2, %rdx
	xorl	%esi, %esi
	call	memset@PLT
.L11:
	testl	%r12d, %r12d
	jle	.L17
	xorl	%edx, %edx
	xorl	%r12d, %r12d
	jmp	.L15
	.p2align 4,,10
	.p2align 3
.L13:
	addl	$1, %edx
	addq	$4, %r13
	addq	$4, %r15
	cmpl	%edx, -60(%rbp)
	jle	.L12
.L15:
	movq	%r13, %rsi
	movq	%r14, %rdi
	xorl	%eax, %eax
	movl	%edx, -68(%rbp)
	call	__isoc99_scanf@PLT
	xorl	%eax, %eax
	movq	%r15, %rsi
	movq	%r14, %rdi
	call	__isoc99_scanf@PLT
	movl	0(%r13), %eax
	movl	-68(%rbp), %edx
	cmpl	%eax, %r12d
	cmovl	%eax, %r12d
	movl	(%r15), %eax
	cmpl	%eax, %ebx
	cmovg	%eax, %ebx
	cmpl	%r12d, %ebx
	jge	.L13
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
.L14:
	movq	-56(%rbp), %rax
	subq	%fs:40, %rax
	jne	.L33
	leaq	-40(%rbp), %rsp
	xorl	%eax, %eax
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.cfi_remember_state
	.cfi_def_cfa 7, 8
	ret
.L17:
	.cfi_restore_state
	xorl	%r12d, %r12d
.L12:
	subl	%r12d, %ebx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	leal	1(%rbx), %edx
	call	__printf_chk@PLT
	jmp	.L14
.L33:
	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"
.LC1:
	.string	"0"
.LC2:
	.string	"%d\n"
	.section	.text.startup,"ax",@progbits
	.p2align 4
	.globl	main
	.type	main, @function
main:
.LFB23:
	.cfi_startproc
	endbr64
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	pushq	%r15
	pushq	%r14
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	leaq	.LC0(%rip), %r14
	leaq	-64(%rbp), %rsi
	pushq	%r13
	movq	%r14, %rdi
	pushq	%r12
	pushq	%rbx
	subq	$40, %rsp
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	leaq	-60(%rbp), %rsi
	movq	%r14, %rdi
	xorl	%eax, %eax
	call	__isoc99_scanf@PLT
	movl	-60(%rbp), %r12d
	movq	%rsp, %rcx
	leal	1(%r12), %eax
	cltq
	leaq	15(,%rax,4), %rax
	movq	%rax, %rsi
	movq	%rax, %rdx
	andq	$-4096, %rsi
	andq	$-16, %rdx
	subq	%rsi, %rcx
	cmpq	%rcx, %rsp
	je	.L3
.L30:
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	cmpq	%rcx, %rsp
	jne	.L30
.L3:
	andl	$4095, %edx
	subq	%rdx, %rsp
	testq	%rdx, %rdx
	jne	.L31
.L4:
	movq	%rax, %rdx
	movq	%rsp, %rcx
	andq	$-4096, %rax
	movq	%rsp, %r13
	andq	$-16, %rdx
	subq	%rax, %rcx
.L5:
	cmpq	%rcx, %rsp
	je	.L6
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L5
.L31:
	orq	$0, -8(%rsp,%rdx)
	jmp	.L4
.L6:
	andl	$4095, %edx
	subq	%rdx, %rsp
	testq	%rdx, %rdx
	jne	.L32
.L7:
	movslq	-64(%rbp), %rdx
	movq	%rsp, %rsi
	movq	%rsp, %r15
	leaq	15(,%rdx,4), %rax
	movq	%rdx, %rbx
	movq	%rax, %rcx
	andq	$-4096, %rax
	andq	$-16, %rcx
	subq	%rax, %rsi
.L8:
	cmpq	%rsi, %rsp
	je	.L9
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L8
.L32:
	orq	$0, -8(%rsp,%rdx)
	jmp	.L7
.L9:
	andl	$4095, %ecx
	subq	%rcx, %rsp
	testq	%rcx, %rcx
	je	.L10
	orq	$0, -8(%rsp,%rcx)
.L10:
	movq	%rsp, %rdi
	testl	%ebx, %ebx
	jle	.L11
	salq	$2, %rdx
	xorl	%esi, %esi
	call	memset@PLT
.L11:
	testl	%r12d, %r12d
	jle	.L17
	xorl	%edx, %edx
	xorl	%r12d, %r12d
	jmp	.L15
	.p2align 4,,10
	.p2align 3
.L13:
	addl	$1, %edx
	addq	$4, %r13
	addq	$4, %r15
	cmpl	%edx, -60(%rbp)
	jle	.L12
.L15:
	movq	%r13, %rsi
	movq	%r14, %rdi
	xorl	%eax, %eax
	movl	%edx, -68(%rbp)
	call	__isoc99_scanf@PLT
	xorl	%eax, %eax
	movq	%r15, %rsi
	movq	%r14, %rdi
	call	__isoc99_scanf@PLT
	movl	0(%r13), %eax
	movl	-68(%rbp), %edx
	cmpl	%eax, %r12d
	cmovl	%eax, %r12d
	movl	(%r15), %eax
	cmpl	%eax, %ebx
	cmovg	%eax, %ebx
	cmpl	%r12d, %ebx
	jge	.L13
	leaq	.LC1(%rip), %rdi
	call	puts@PLT
.L14:
	movq	-56(%rbp), %rax
	subq	%fs:40, %rax
	jne	.L33
	leaq	-40(%rbp), %rsp
	xorl	%eax, %eax
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.cfi_remember_state
	.cfi_def_cfa 7, 8
	ret
.L17:
	.cfi_restore_state
	xorl	%r12d, %r12d
.L12:
	subl	%r12d, %ebx
	leaq	.LC2(%rip), %rsi
	movl	$1, %edi
	xorl	%eax, %eax
	leal	1(%rbx), %edx
	call	__printf_chk@PLT
	jmp	.L14
.L33:
	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 argc, char const *argv[]) {

  int N, M;
  scanf("%d", &N);
  scanf("%d", &M);

  int L[M + 1];
  int R[M + 1];
  int tmp[M];

  int cnt[N];
  for (int i = 0; i < N; i++) {
    cnt[i] = 0;
  }

  int min = 0;
  int max = N;

  for (int i = 0; i < M; i++) {
    scanf("%d", L + i);
    scanf("%d", R + i);

    if (L[i] > min) {
      min = L[i];
    }
    if (R[i] < max) {
      max = R[i];
    }

    if (min > max) {
      printf("0\n");
      return 0;
    }
  }

  int gate = max - min + 1;
  printf("%d\n", gate);

  return 0;
}

101000 1
1 100000
 4 2
1 6
2 4
 10 3
3 6
7 7
6 9
 101000 1
1 100100
 101000 1
1 100110
 101000 1
1 100010
 101100 1
2 100110
 8 3
1 7
7 7
1 11
 8 1
1 7
7 7
2 11
 4 1
1 4
2 4

100000
 3
 0
 100100
 100110
 100010
 100109
 1
 7
 4

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 argc, char const *argv[]) {

  int N, M;
  scanf("%d", &N);
  scanf("%d", &M);

  int L[M + 1];
  int R[M + 1];
  int tmp[M];

  int cnt[N];
  for (int i = 0; i < N; i++) {
    cnt[i] = 0;
  }

  int min = 0;
  int max = N;

  for (int i = 0; i < M; i++) {
    scanf("%d", L + i);
    scanf("%d", R + i);

    if (L[i] > min) {
      min = L[i];
    }
    if (R[i] < max) {
      max = R[i];
    }

    if (min > max) {
      printf("0\n");
      return 0;
    }
  }

  int gate = max - min + 1;
  printf("%d\n", gate);

  return 0;
}
```

Unoptimized Assembly Code:

```assembly
	.file	"temp.c"
	.text
	.section	.rodata
.LC0:
	.string	"%d"
.LC1:
	.string	"0"
.LC2:
	.string	"%d\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
	pushq	%r15
	pushq	%r14
	pushq	%r13
	pushq	%r12
	pushq	%rbx
	subq	$232, %rsp
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movl	%edi, -164(%rbp)
	movq	%rsi, -176(%rbp)
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	movq	%rsp, %rax
	movq	%rax, %rbx
	leaq	-148(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-144(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-144(%rbp), %eax
	leal	1(%rax), %edx
	movslq	%edx, %rax
	subq	$1, %rax
	movq	%rax, -120(%rbp)
	movslq	%edx, %rax
	movq	%rax, %r12
	movl	$0, %r13d
	movslq	%edx, %rax
	movq	%rax, %r14
	movl	$0, %r15d
	movslq	%edx, %rax
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %esi
	movl	$0, %edx
	divq	%rsi
	imulq	$16, %rax, %rdx
	movq	%rdx, %rax
	andq	$-4096, %rax
	movq	%rsp, %rcx
	subq	%rax, %rcx
.L2:
	cmpq	%rcx, %rsp
	je	.L3
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L2
.L3:
	movq	%rdx, %rax
	andl	$4095, %eax
	subq	%rax, %rsp
	movq	%rdx, %rax
	andl	$4095, %eax
	testq	%rax, %rax
	je	.L4
	movq	%rdx, %rax
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L4:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -112(%rbp)
	movl	-144(%rbp), %eax
	leal	1(%rax), %edx
	movslq	%edx, %rax
	subq	$1, %rax
	movq	%rax, -104(%rbp)
	movslq	%edx, %rax
	movq	%rax, -192(%rbp)
	movq	$0, -184(%rbp)
	movslq	%edx, %rax
	movq	%rax, -208(%rbp)
	movq	$0, -200(%rbp)
	movslq	%edx, %rax
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %edi
	movl	$0, %edx
	divq	%rdi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L5:
	cmpq	%rdx, %rsp
	je	.L6
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L5
.L6:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L7
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L7:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -96(%rbp)
	movl	-144(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -88(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -224(%rbp)
	movq	$0, -216(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -240(%rbp)
	movq	$0, -232(%rbp)
	cltq
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %esi
	movl	$0, %edx
	divq	%rsi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L8:
	cmpq	%rdx, %rsp
	je	.L9
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L8
.L9:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L10
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L10:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -80(%rbp)
	movl	-148(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -72(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -256(%rbp)
	movq	$0, -248(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -272(%rbp)
	movq	$0, -264(%rbp)
	cltq
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %edi
	movl	$0, %edx
	divq	%rdi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L11:
	cmpq	%rdx, %rsp
	je	.L12
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L11
.L12:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L13
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L13:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -64(%rbp)
	movl	$0, -140(%rbp)
	jmp	.L14
.L15:
	movq	-64(%rbp), %rax
	movl	-140(%rbp), %edx
	movslq	%edx, %rdx
	movl	$0, (%rax,%rdx,4)
	addl	$1, -140(%rbp)
.L14:
	movl	-148(%rbp), %eax
	cmpl	%eax, -140(%rbp)
	jl	.L15
	movl	$0, -136(%rbp)
	movl	-148(%rbp), %eax
	movl	%eax, -132(%rbp)
	movl	$0, -128(%rbp)
	jmp	.L16
.L21:
	movl	-128(%rbp), %eax
	cltq
	leaq	0(,%rax,4), %rdx
	movq	-112(%rbp), %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-128(%rbp), %eax
	cltq
	leaq	0(,%rax,4), %rdx
	movq	-96(%rbp), %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movq	-112(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	cmpl	%eax, -136(%rbp)
	jge	.L17
	movq	-112(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	movl	%eax, -136(%rbp)
.L17:
	movq	-96(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	cmpl	%eax, -132(%rbp)
	jle	.L18
	movq	-96(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	movl	%eax, -132(%rbp)
.L18:
	movl	-136(%rbp), %eax
	cmpl	-132(%rbp), %eax
	jle	.L19
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	call	puts@PLT
	movl	$0, %eax
	jmp	.L20
.L19:
	addl	$1, -128(%rbp)
.L16:
	movl	-144(%rbp), %eax
	cmpl	%eax, -128(%rbp)
	jl	.L21
	movl	-132(%rbp), %eax
	subl	-136(%rbp), %eax
	addl	$1, %eax
	movl	%eax, -124(%rbp)
	movl	-124(%rbp), %eax
	movl	%eax, %esi
	leaq	.LC2(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
.L20:
	movq	%rbx, %rsp
	movq	-56(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L23
	call	__stack_chk_fail@PLT
.L23:
	leaq	-40(%rbp), %rsp
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.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"
.LC1:
	.string	"0"
.LC2:
	.string	"%d\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
	pushq	%r15
	pushq	%r14
	pushq	%r13
	pushq	%r12
	pushq	%rbx
	subq	$232, %rsp
	.cfi_offset 15, -24
	.cfi_offset 14, -32
	.cfi_offset 13, -40
	.cfi_offset 12, -48
	.cfi_offset 3, -56
	movl	%edi, -164(%rbp)
	movq	%rsi, -176(%rbp)
	movq	%fs:40, %rax
	movq	%rax, -56(%rbp)
	xorl	%eax, %eax
	movq	%rsp, %rax
	movq	%rax, %rbx
	leaq	-148(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	leaq	-144(%rbp), %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-144(%rbp), %eax
	leal	1(%rax), %edx
	movslq	%edx, %rax
	subq	$1, %rax
	movq	%rax, -120(%rbp)
	movslq	%edx, %rax
	movq	%rax, %r12
	movl	$0, %r13d
	movslq	%edx, %rax
	movq	%rax, %r14
	movl	$0, %r15d
	movslq	%edx, %rax
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %esi
	movl	$0, %edx
	divq	%rsi
	imulq	$16, %rax, %rdx
	movq	%rdx, %rax
	andq	$-4096, %rax
	movq	%rsp, %rcx
	subq	%rax, %rcx
.L2:
	cmpq	%rcx, %rsp
	je	.L3
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L2
.L3:
	movq	%rdx, %rax
	andl	$4095, %eax
	subq	%rax, %rsp
	movq	%rdx, %rax
	andl	$4095, %eax
	testq	%rax, %rax
	je	.L4
	movq	%rdx, %rax
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L4:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -112(%rbp)
	movl	-144(%rbp), %eax
	leal	1(%rax), %edx
	movslq	%edx, %rax
	subq	$1, %rax
	movq	%rax, -104(%rbp)
	movslq	%edx, %rax
	movq	%rax, -192(%rbp)
	movq	$0, -184(%rbp)
	movslq	%edx, %rax
	movq	%rax, -208(%rbp)
	movq	$0, -200(%rbp)
	movslq	%edx, %rax
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %edi
	movl	$0, %edx
	divq	%rdi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L5:
	cmpq	%rdx, %rsp
	je	.L6
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L5
.L6:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L7
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L7:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -96(%rbp)
	movl	-144(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -88(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -224(%rbp)
	movq	$0, -216(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -240(%rbp)
	movq	$0, -232(%rbp)
	cltq
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %esi
	movl	$0, %edx
	divq	%rsi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L8:
	cmpq	%rdx, %rsp
	je	.L9
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L8
.L9:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L10
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L10:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -80(%rbp)
	movl	-148(%rbp), %eax
	movslq	%eax, %rdx
	subq	$1, %rdx
	movq	%rdx, -72(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -256(%rbp)
	movq	$0, -248(%rbp)
	movslq	%eax, %rdx
	movq	%rdx, -272(%rbp)
	movq	$0, -264(%rbp)
	cltq
	leaq	0(,%rax,4), %rdx
	movl	$16, %eax
	subq	$1, %rax
	addq	%rdx, %rax
	movl	$16, %edi
	movl	$0, %edx
	divq	%rdi
	imulq	$16, %rax, %rax
	movq	%rax, %rcx
	andq	$-4096, %rcx
	movq	%rsp, %rdx
	subq	%rcx, %rdx
.L11:
	cmpq	%rdx, %rsp
	je	.L12
	subq	$4096, %rsp
	orq	$0, 4088(%rsp)
	jmp	.L11
.L12:
	movq	%rax, %rdx
	andl	$4095, %edx
	subq	%rdx, %rsp
	movq	%rax, %rdx
	andl	$4095, %edx
	testq	%rdx, %rdx
	je	.L13
	andl	$4095, %eax
	subq	$8, %rax
	addq	%rsp, %rax
	orq	$0, (%rax)
.L13:
	movq	%rsp, %rax
	addq	$3, %rax
	shrq	$2, %rax
	salq	$2, %rax
	movq	%rax, -64(%rbp)
	movl	$0, -140(%rbp)
	jmp	.L14
.L15:
	movq	-64(%rbp), %rax
	movl	-140(%rbp), %edx
	movslq	%edx, %rdx
	movl	$0, (%rax,%rdx,4)
	addl	$1, -140(%rbp)
.L14:
	movl	-148(%rbp), %eax
	cmpl	%eax, -140(%rbp)
	jl	.L15
	movl	$0, -136(%rbp)
	movl	-148(%rbp), %eax
	movl	%eax, -132(%rbp)
	movl	$0, -128(%rbp)
	jmp	.L16
.L21:
	movl	-128(%rbp), %eax
	cltq
	leaq	0(,%rax,4), %rdx
	movq	-112(%rbp), %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movl	-128(%rbp), %eax
	cltq
	leaq	0(,%rax,4), %rdx
	movq	-96(%rbp), %rax
	addq	%rdx, %rax
	movq	%rax, %rsi
	leaq	.LC0(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	__isoc99_scanf@PLT
	movq	-112(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	cmpl	%eax, -136(%rbp)
	jge	.L17
	movq	-112(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	movl	%eax, -136(%rbp)
.L17:
	movq	-96(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	cmpl	%eax, -132(%rbp)
	jle	.L18
	movq	-96(%rbp), %rax
	movl	-128(%rbp), %edx
	movslq	%edx, %rdx
	movl	(%rax,%rdx,4), %eax
	movl	%eax, -132(%rbp)
.L18:
	movl	-136(%rbp), %eax
	cmpl	-132(%rbp), %eax
	jle	.L19
	leaq	.LC1(%rip), %rax
	movq	%rax, %rdi
	call	puts@PLT
	movl	$0, %eax
	jmp	.L20
.L19:
	addl	$1, -128(%rbp)
.L16:
	movl	-144(%rbp), %eax
	cmpl	%eax, -128(%rbp)
	jl	.L21
	movl	-132(%rbp), %eax
	subl	-136(%rbp), %eax
	addl	$1, %eax
	movl	%eax, -124(%rbp)
	movl	-124(%rbp), %eax
	movl	%eax, %esi
	leaq	.LC2(%rip), %rax
	movq	%rax, %rdi
	movl	$0, %eax
	call	printf@PLT
	movl	$0, %eax
.L20:
	movq	%rbx, %rsp
	movq	-56(%rbp), %rdx
	subq	%fs:40, %rdx
	je	.L23
	call	__stack_chk_fail@PLT
.L23:
	leaq	-40(%rbp), %rsp
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	.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:
