user: What would the C source look like for the assembly code provided here:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x28(%rbp)
  xor    %eax,%eax
  lea    -0x30(%rbp),%rsi
  lea    D31(%rip),%rdi
  call   <scanf@plt>
  lea    -0x2c(%rbp),%rbx
  mov    -0x30(%rbp),%edx
  lea    D1(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,%r12d
  test   %eax,%eax
  jle    L189
  lea    -0x1(%rax),%eax
  lea    -0x2b(%rbp,%rax,1),%r13
L170:
  movsbl (%rbx),%edi
  call   <toupper@plt>
  mov    %al,(%rbx)
  add    $0x1,%rbx
  cmp    %r13,%rbx
  jne    L170
  movslq %r12d,%r13
  lea    0xf(%r13),%rax
  mov    %rax,%rcx
  and    $0xfffffffffffffff0,%rcx
  and    $0xfffffffffffff000,%rax
  mov    %rsp,%rdx
  sub    %rax,%rdx
L211:
  cmp    %rdx,%rsp
  je     L79
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L211
L189:
  movslq %eax,%r13
  lea    0xf(%r13),%rax
  mov    %rax,%rdx
  and    $0xfffffffffffffff0,%rdx
  and    $0xfffffffffffff000,%rax
  mov    %rsp,%rcx
  sub    %rax,%rcx
L42:
  cmp    %rcx,%rsp
  je     L143
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L42
L143:
  mov    %rdx,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L99
  orq    $0x0,-0x8(%rsp,%rax,1)
L99:
  mov    %rsp,%rdi
  mov    $0x0,%eax
  jmp    L116
L188:
  mov    %rcx,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L114
  orq    $0x0,-0x8(%rsp,%rax,1)
L114:
  mov    %rsp,%rbx
  add    $0xf,%r13
  mov    %r13,%rax
  and    $0xfffffffffffffff0,%rax
  and    $0xfffffffffffff000,%r13
  mov    %rsp,%rdx
  sub    %r13,%rdx
L15:
  cmp    %rdx,%rsp
  je     L217
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L15
L217:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  je     L82
  orq    $0x0,-0x8(%rsp,%rdx,1)
L82:
  mov    %rsp,%r12
  lea    D31(%rip),%r13
L215:
  mov    -0x30(%rbp),%edx
  mov    %r13,%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  test   %eax,%eax
  jle    L48
  movslq %eax,%rdx
  lea    -0x1(%rbx,%rdx,1),%rcx
  mov    %r12,%rdx
  lea    -0x1(%rax),%esi
  lea    0x1(%r12,%rsi,1),%rdi
L213:
  movzbl (%rcx),%esi
  mov    %sil,(%rdx)
  sub    $0x1,%rcx
  add    $0x1,%rdx
  cmp    %rdi,%rdx
  jne    L213
L91:
  cltq
  movb   $0x0,(%r12,%rax,1)
  addl   $0x1,-0x30(%rbp)
  mov    %r12,%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L215
  mov    -0x30(%rbp),%eax
  lea    -0x1(%rax),%esi
  lea    D8(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %r14,%rsp
L22:
  mov    -0x28(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L185
  mov    $0x0,%eax
  lea    -0x20(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %rbp
  ret
L48:
  mov    $0x0,%eax
  jmp    L91
L109:
  lea    -0x2c(%rbp),%rsi
  lea    D37(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L22
L79:
  mov    %rcx,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L168
  orq    $0x0,-0x8(%rsp,%rax,1)
L168:
  mov    %rsp,%rdi
  sub    $0x1,%r12d
  movslq %r12d,%rax
  mov    %rsp,%rdx
L53:
  movzbl -0x2c(%rbp,%rax,1),%ecx
  mov    %cl,(%rdx)
  sub    $0x1,%rax
  add    $0x1,%rdx
  test   %eax,%eax
  jns    L53
  test   %r12d,%r12d
  mov    $0x0,%eax
  cmovns %r12d,%eax
  add    $0x1,%eax
L116:
  cltq
  movb   $0x0,(%rdi,%rax,1)
  lea    -0x2c(%rbp),%rsi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L109
  mov    %rsp,%r14
  lea    0xf(%r13),%rax
  mov    %rax,%rcx
  and    $0xfffffffffffffff0,%rcx
  and    $0xfffffffffffff000,%rax
  mov    %rsp,%rdx
  sub    %rax,%rdx
L124:
  cmp    %rdx,%rsp
  je     L188
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L124
L185:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_tag: D31
type_guessed: string
name: unpack_data
arguments: data_tag: D1
type_guessed: string
name: unpack_data
arguments: data_tag: D8
type_guessed: string
name: unpack_data
arguments: data_tag: D37
type_guessed: string

tool: D31: %d

tool: D1: %x

tool: D8: 
%d

tool: D37: %s

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;
}
```