user: 这段汇编代码用C语言表示是什么样的：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x10(%rbp)
  mov    D39(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fread@plt>
  mov    D90(%rip),%rax
  mov    (%rax),%edx
  lea    -0x10(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    D90(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    D39(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fread@plt>
  mov    D90(%rip),%rax
  mov    (%rax),%edx
  lea    -0x10(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    D90(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    D39(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fread@plt>
  mov    D90(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    D39(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fread@plt>
  mov    D90(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  movl   $0x1,-0xc(%rbp)
  mov    D90(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    D90(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  jmp    L10
L23:
  mov    D39(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fread@plt>
  mov    D39(%rip),%rax
  mov    (%rax),%eax
  mov    %eax,%edi
  call   <feof@plt>
  test   %eax,%eax
  jne    L10
  mov    D90(%rip),%rax
  mov    (%rax),%edx
  lea    -0xc(%rbp),%rax
  mov    %edx,%ecx
  mov    $0x1,%edx
  mov    $0x4,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
L10:
  mov    D39(%rip),%rax
  mov    (%rax),%eax
  mov    %eax,%edi
  call   <feof@plt>
  test   %eax,%eax
  je     L23
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L13
  call   <__stack_chk_fail@plt>
L13:
  leave
  ret
```

assistant: ```c
int main(int argc, char *argv[]) {
  uint8_t zero = 0;
  uint8_t val;
  fread(&val, sizeof(val), 1, stdin);
  fwrite(&zero, sizeof(zero), 1, stdout);
  fwrite(&val, sizeof(val), 1, stdout);
  fread(&val, sizeof(val), 1, stdin);
  fwrite(&zero, sizeof(zero), 1, stdout);
  fwrite(&val, sizeof(val), 1, stdout);
  fread(&val, sizeof(val), 1, stdin);
  fwrite(&val, sizeof(val), 1, stdout);
  fread(&val, sizeof(val), 1, stdin);
  fwrite(&val, sizeof(val), 1, stdout);
  val = 1;
  fwrite(&val, sizeof(val), 1, stdout);
  fwrite(&val, sizeof(val), 1, stdout);
  while (!feof(stdin)) {
    fread(&val, sizeof(val), 1, stdin);
    if (!feof(stdin)) {
      fwrite(&val, sizeof(val), 1, stdout);
    }
  }
  return 0;
}
```