user: Please show me the C implementation that matches the assembly code listed below:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    -0x14(%rbp),%r8
  lea    -0x18(%rbp),%rdi
  lea    -0x23(%rbp),%rcx
  lea    -0x1c(%rbp),%rdx
  lea    -0x20(%rbp),%rax
  sub    $0x8,%rsp
  lea    -0x21(%rbp),%rsi
  push   %rsi
  lea    -0x22(%rbp),%rsi
  push   %rsi
  lea    -0xc(%rbp),%rsi
  push   %rsi
  lea    -0x10(%rbp),%rsi
  push   %rsi
  lea    -0x23(%rbp),%rsi
  push   %rsi
  mov    %r8,%r9
  mov    %rdi,%r8
  mov    %rax,%rsi
  lea    D21(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  add    $0x30,%rsp
  movzbl -0x22(%rbp),%eax
  cmp    $0x41,%al
  jne    L47
  mov    -0x20(%rbp),%eax
  cmp    $0x1,%eax
  jne    L10
  mov    -0x1c(%rbp),%eax
  cmp    $0x2,%eax
  jne    L10
  mov    -0xc(%rbp),%esi
  mov    -0x10(%rbp),%ecx
  mov    -0x14(%rbp),%edx
  mov    -0x18(%rbp),%eax
  mov    %esi,%r8d
  mov    %eax,%esi
  lea    D5(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L21
L10:
  mov    -0xc(%rbp),%esi
  mov    -0x10(%rbp),%r8d
  mov    -0x14(%rbp),%edi
  mov    -0x18(%rbp),%ecx
  mov    -0x1c(%rbp),%edx
  mov    -0x20(%rbp),%eax
  sub    $0x8,%rsp
  push   %rsi
  mov    %r8d,%r9d
  mov    %edi,%r8d
  mov    %eax,%esi
  lea    D17(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  add    $0x10,%rsp
  jmp    L21
L47:
  mov    -0x20(%rbp),%eax
  cmp    $0x1,%eax
  jne    L41
  mov    -0x1c(%rbp),%eax
  cmp    $0x2,%eax
  jne    L41
  mov    -0xc(%rbp),%esi
  mov    -0x10(%rbp),%ecx
  mov    -0x14(%rbp),%edx
  mov    -0x18(%rbp),%eax
  mov    %esi,%r8d
  mov    %eax,%esi
  lea    D8(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L21
L41:
  mov    -0xc(%rbp),%ecx
  mov    -0x10(%rbp),%r8d
  mov    -0x14(%rbp),%edi
  mov    -0x18(%rbp),%eax
  mov    -0x1c(%rbp),%edx
  add    $0x2,%edx
  mov    -0x20(%rbp),%esi
  add    $0x1,%esi
  sub    $0x8,%rsp
  push   %rcx
  mov    %r8d,%r9d
  mov    %edi,%r8d
  mov    %eax,%ecx
  lea    D17(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  add    $0x10,%rsp
L21:
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L58
  call   <__stack_chk_fail@plt>
L58:
  leave
  ret
```

tool_calls: name: unpack_data
arguments: tag: D21
type: string
name: unpack_data
arguments: tag: D5
type: string
name: unpack_data
arguments: tag: D17
type: string
name: unpack_data
arguments: tag: D8
type: string

tool: D21: %1d%1d%c%1d%1d%c%1d%1d%c%c

tool: D5: 00:%d%d:%d%d

tool: D17: %d%d:%d%d:%d%d

tool: D8: 12:%d%d:%d%d

assistant: ```c
int main() {
  int h1, h2, m1, m2, s1, s2;
  char a, b, c;
  scanf("%1d%1d%c%1d%1d%c%1d%1d%c%c", &h1, &h2, &a, &m1, &m2, &a, &s1, &s2, &b, &c);
  if (b == 'A') {
    if (h1 == 1 && h2 == 2)
      printf("00:%d%d:%d%d", m1, m2, s1, s2);
    else
      printf("%d%d:%d%d:%d%d", h1, h2, m1, m2, s1, s2);
  } else {
    if (h1 == 1 && h2 == 2)
      printf("12:%d%d:%d%d", m1, m2, s1, s2);
    else
      printf("%d%d:%d%d:%d%d", h1 + 1, h2 + 2, m1, m2, s1, s2);
  }
  return 0;
}
```