user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  lea    -0x40(%rbp),%rsi
  push   %r13
  lea    -0x3c(%rbp),%r13
  push   %r12
  lea    D36(%rip),%r12
  push   %rbx
  mov    %r12,%rdi
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  call   <scanf@plt>
  mov    -0x40(%rbp),%edx
  lea    D31(%rip),%rsi
  mov    %r13,%rdi
  call   <sprintf@plt>
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %eax,%ebx
  test   %eax,%eax
  jle    L220
  lea    -0x1(%rax),%eax
  mov    %r13,%r15
  mov    %eax,-0x44(%rbp)
  lea    -0x3b(%rbp,%rax,1),%r14
L89:
  movsbl (%r15),%edi
  add    $0x1,%r15
  call   <toupper@plt>
  mov    %al,-0x1(%r15)
  cmp    %r14,%r15
  jne    L89
  movslq %ebx,%rax
  mov    %rsp,%rcx
  lea    0xf(%rax),%r14
  mov    %r14,%rsi
  mov    %r14,%rdx
  and    $0xfffffffffffff000,%rsi
  and    $0xfffffffffffffff0,%rdx
  sub    %rsi,%rcx
L162:
  cmp    %rcx,%rsp
  je     L217
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L162
L217:
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  jne    L288
L176:
  movslq -0x44(%rbp),%r15
  mov    %rsp,%rdi
  movzbl -0x3c(%rbp,%r15,1),%edx
  mov    %dl,(%rsp)
  lea    -0x2(%rbx),%edx
  cmp    $0x1,%ebx
  je     L214
  movslq %edx,%rdx
  movzbl -0x3c(%rbp,%rdx,1),%edx
  mov    %dl,0x1(%rsp)
  lea    -0x3(%rbx),%edx
  cmp    $0x2,%ebx
  je     L214
  movslq %edx,%rcx
  movzbl -0x3c(%rbp,%rcx,1),%ecx
  mov    %cl,0x2(%rsp)
  test   %edx,%edx
  je     L214
  movzbl -0x3c(%rbp),%edx
  mov    %dl,0x3(%rsp)
L214:
  movb   $0x0,(%rdi,%rax,1)
  mov    %r13,%rsi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L118
  mov    %r14,%rcx
  mov    %r14,%rax
  mov    %rsp,%rdx
  mov    %rsp,%r13
  and    $0xfffffffffffff000,%rcx
  and    $0xfffffffffffffff0,%rax
  sub    %rcx,%rdx
L179:
  cmp    %rdx,%rsp
  je     L254
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L179
L118:
  mov    %r13,%rsi
  lea    D27(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
L64:
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L10
  lea    -0x28(%rbp),%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L220:
  movslq %eax,%r14
  mov    %rsp,%rdx
  add    $0xf,%r14
  mov    %r14,%rcx
  mov    %r14,%rax
  and    $0xfffffffffffff000,%rcx
  and    $0xfffffffffffffff0,%rax
  sub    %rcx,%rdx
L221:
  cmp    %rdx,%rsp
  je     L250
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L221
L254:
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  jne    L92
L71:
  mov    %r14,%rax
  mov    %rsp,%rdx
  and    $0xfffffffffffff000,%r14
  mov    %rsp,%rbx
  and    $0xfffffffffffffff0,%rax
  sub    %r14,%rdx
L186:
  cmp    %rdx,%rsp
  je     L65
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L186
L288:
  orq    $0x0,-0x8(%rsp,%rdx,1)
  jmp    L176
L92:
  orq    $0x0,-0x8(%rsp,%rax,1)
  jmp    L71
L65:
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  jne    L100
L216:
  mov    %rsp,%r14
  nopl   0x0(%rax)
L15:
  mov    -0x40(%rbp),%edx
  mov    %rbx,%rdi
  mov    %r12,%rsi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  test   %eax,%eax
  jle    L131
  movslq %eax,%rdi
  sub    $0x1,%eax
  mov    %r14,%rdx
  lea    -0x1(%rbx,%rdi,1),%rcx
  lea    0x1(%r14,%rax,1),%rsi
  nopl   (%rax)
L122:
  movzbl (%rcx),%eax
  add    $0x1,%rdx
  sub    $0x1,%rcx
  mov    %al,-0x1(%rdx)
  cmp    %rsi,%rdx
  jne    L122
L23:
  movb   $0x0,(%r14,%rdi,1)
  mov    %r14,%rsi
  mov    %rbx,%rdi
  addl   $0x1,-0x40(%rbp)
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L15
  mov    -0x40(%rbp),%eax
  lea    D22(%rip),%rdi
  lea    -0x1(%rax),%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %r13,%rsp
  jmp    L64
L250:
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  jne    L16
L75:
  mov    %rsp,%rdi
  xor    %eax,%eax
  jmp    L214
  nopw   0x0(%rax,%rax,1)
L131:
  xor    %edi,%edi
  jmp    L23
L16:
  orq    $0x0,-0x8(%rsp,%rax,1)
  jmp    L75
L100:
  orq    $0x0,-0x8(%rsp,%rax,1)
  jmp    L216
L10:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: label: D36
data_type: string
name: disassemble_data
arguments: label: D31
data_type: string
name: disassemble_data
arguments: label: D27
data_type: string
name: disassemble_data
arguments: label: D22
data_type: string

tool: D36: %d

tool: D31: %x

tool: D27: %s

tool: D22: 
%d

assistant: ```c
int main() {
  int n;
  int i = 0, j;
  char h[4];
  scanf("%d", &n);
  sprintf(h, "%x", n);
  int r = strlen(h);
  for (i = 0; i < r; i++)
    h[i] = toupper(h[i]);
  char b[r];
  for (i = r - 1, j = 0; i >= 0; i--, j++)
    b[j] = h[i];
  b[j] = '\0';
  if (strcmp(b, h) != 0) {
    char s1[r];
    char s2[r];
    do {
      sprintf(s1, "%d", n);
      r = strlen(s1);
      for (i = r - 1, j = 0; i >= 0; i--, j++)
        s2[j] = s1[i];
      s2[j] = '\0';
      n = n + 1;
    } while (strcmp(s1, s2) != 0);
    printf("\n%d", n - 1);
  } else
    printf("%s", h);
  return 0;
}
```