user: Demonstrate the C code that generates the assembly output below:

```asm
<main>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0x8(%rsp),%rsi
  lea    D6(%rip),%rdi
  call   <scanf@plt>
  mov    0x8(%rsp),%r9d
  test   %r9d,%r9d
  jle    L7
  mov    %r9d,%edx
  mov    $0x1,%esi
  lea    0xd(%rsp),%rdi
  jmp    L35
L143:
  mov    %eax,%edx
L35:
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  shr    $0x1c,%ecx
  lea    (%rdx,%rcx,1),%eax
  and    $0xf,%eax
  sub    %ecx,%eax
  lea    0x30(%rax),%r8d
  lea    0x37(%rax),%ecx
  cmp    $0x9,%eax
  mov    %r8d,%eax
  cmovg  %ecx,%eax
  mov    %al,(%rdi,%rsi,1)
  lea    0xf(%rdx),%eax
  test   %edx,%edx
  cmovns %edx,%eax
  sar    $0x4,%eax
  mov    %esi,%ebx
  add    $0x1,%rsi
  cmp    $0xf,%edx
  jg     L143
  mov    %eax,0x8(%rsp)
  mov    %ebx,%ecx
  shr    $0x1f,%ecx
  add    %ebx,%ecx
  sar    %ecx
  cmp    $0xffffffff,%ebx
  jl     L107
L91:
  movslq %ebx,%rax
  lea    0xe(%rsp,%rax,1),%rdx
  mov    $0x0,%eax
  mov    $0x0,%esi
  mov    $0x1,%edi
L95:
  movzbl -0x1(%rdx),%r10d
  cmp    %r10b,0xe(%rsp,%rax,1)
  cmovne %edi,%esi
  add    $0x1,%rax
  sub    $0x1,%rdx
  cmp    %eax,%ecx
  jge    L95
  cmp    $0x1,%esi
  jne    L107
  mov    $0x0,%r10d
  lea    0xd(%rsp),%r8
  lea    0xe(%rsp),%rdi
  jmp    L151
L7:
  mov    $0x0,%ebx
  mov    $0x0,%ecx
  jmp    L91
L24:
  mov    %eax,%edx
L147:
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  shr    $0x1c,%ecx
  lea    (%rdx,%rcx,1),%eax
  and    $0xf,%eax
  sub    %ecx,%eax
  lea    0x30(%rax),%ebx
  lea    0x37(%rax),%ecx
  cmp    $0x9,%eax
  mov    %ebx,%eax
  cmovg  %ecx,%eax
  mov    %al,(%r8,%r11,1)
  lea    0xf(%rdx),%eax
  test   %edx,%edx
  cmovns %edx,%eax
  sar    $0x4,%eax
  mov    %eax,%ebp
  mov    %r11d,%ebx
  add    $0x1,%r11
  cmp    $0xf,%edx
  jg     L24
  mov    %ebx,%r11d
  shr    $0x1f,%r11d
  add    %ebx,%r11d
  sar    %r11d
  cmp    $0xffffffff,%ebx
  jl     L76
L4:
  movslq %ebx,%rdx
  add    %rdi,%rdx
  mov    $0x0,%eax
  mov    $0x0,%ecx
L108:
  movzbl -0x1(%rdx),%r12d
  cmp    %r12b,(%rdi,%rax,1)
  cmovne %esi,%ecx
  add    $0x1,%rax
  sub    $0x1,%rdx
  cmp    %eax,%r11d
  jge    L108
  cmp    $0x1,%ecx
  jne    L12
L151:
  add    $0x1,%r9d
  test   %r9d,%r9d
  jle    L113
  mov    %r9d,%edx
  mov    $0x1,%r11d
  jmp    L147
L113:
  mov    %r9d,%ebp
  mov    %r10d,%ebx
  mov    %r10d,%r11d
  jmp    L4
L12:
  mov    %ebp,0x8(%rsp)
L107:
  test   %ebx,%ebx
  jle    L76
  movslq %ebx,%rax
  lea    0xe(%rsp,%rax,1),%rbp
  lea    0xd(%rsp,%rax,1),%rax
  lea    -0x1(%rbx),%edx
  sub    %rdx,%rax
  mov    %rax,%rbx
  lea    D18(%rip),%r12
L82:
  movsbl -0x1(%rbp),%esi
  mov    %r12,%rdi
  call   <printf@plt>
  sub    $0x1,%rbp
  cmp    %rbp,%rbx
  jne    L82
L76:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L156
  mov    $0x0,%eax
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L156:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_label: D6
data_type: string
name: parse_data
arguments: data_label: D18
data_type: string

tool: D6: %d

tool: D18: %c

assistant: ```c
int main() {
  int a = 0, num, i, ezway, end = 0, off;
  char hexa[10];
  scanf("%d", &num);
  off = num;
  for (i = 0; num > 0; i++) {
    ezway = num % 16;
    if (ezway < 10)
      hexa[i] = ezway + '0';
    else
      hexa[i] = ezway + 55;
    num /= 16;
  }
  while (a <= i / 2) {
    if (hexa[a] != hexa[i - a - 1])
      end = 1;
    a++;
  }
  while (end == 1) {
    off++;
    num = off;
    for (i = 0; num > 0; i++) {
      ezway = num % 16;
      if (ezway < 10)
        hexa[i] = ezway + '0';
      else
        hexa[i] = ezway + 55;
      num /= 16;
    }
    end = 0;
    a = 0;
    while (a <= i / 2) {
      if (hexa[a] != hexa[i - a - 1])
        end = 1;
      a++;
    }
  }
  while (i > 0) {
    printf("%c", hexa[i - 1]);
    i--;
  }
  return 0;
}
```