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

```asm
<isValidSudoku0>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %rdi,%r12
  mov    %esi,%r13d
  mov    %edx,%ebx
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  test   %esi,%esi
  jle    L51
  mov    %rdi,%rbp
  lea    -0x1(%rsi),%eax
  lea    0x8(%rdi,%rax,8),%r15
  mov    %rsp,%r14
  jmp    L257
L74:
  add    $0x1,%rdx
  cmp    %rdi,%rdx
  je     L112
L113:
  movzbl (%rdx),%eax
  cmp    $0x2e,%al
  je     L74
  movsbl %al,%eax
  sub    $0x30,%eax
  cltq
  mov    (%rsp,%rax,4),%ecx
  lea    0x1(%rcx),%esi
  mov    %esi,(%rsp,%rax,4)
  test   %ecx,%ecx
  je     L74
  mov    $0x0,%eax
L10:
  mov    0x28(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L217
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L112:
  add    $0x8,%rbp
  cmp    %r15,%rbp
  je     L51
L257:
  mov    $0x28,%edx
  mov    $0x0,%esi
  mov    %r14,%rdi
  call   <memset@plt>
  test   %ebx,%ebx
  jle    L112
  mov    0x0(%rbp),%rdx
  mov    %ebx,%edi
  add    %rdx,%rdi
  jmp    L113
L51:
  test   %ebx,%ebx
  jle    L118
  mov    %ebx,%ebx
  lea    -0x1(%r13),%eax
  lea    0x8(%r12,%rax,8),%r14
  mov    $0x0,%ebp
  mov    %rsp,%r15
  jmp    L285
L125:
  add    $0x8,%rdx
  cmp    %r14,%rdx
  je     L175
L4:
  mov    (%rdx),%rax
  movzbl (%rax,%rbp,1),%eax
  cmp    $0x2e,%al
  je     L125
  movsbl %al,%eax
  sub    $0x30,%eax
  cltq
  mov    (%rsp,%rax,4),%ecx
  lea    0x1(%rcx),%esi
  mov    %esi,(%rsp,%rax,4)
  test   %ecx,%ecx
  je     L125
  mov    $0x0,%eax
  jmp    L10
L175:
  add    $0x1,%rbp
  cmp    %rbx,%rbp
  je     L118
L285:
  mov    $0x28,%edx
  mov    $0x0,%esi
  mov    %r15,%rdi
  call   <memset@plt>
  test   %r13d,%r13d
  jle    L175
  mov    %r12,%rdx
  jmp    L4
L118:
  mov    $0x0,%ebp
  mov    %rsp,%r13
L18:
  mov    $0x0,%ebx
  jmp    L20
L262:
  add    $0x1,%rdx
  cmp    %rdx,%rcx
  je     L177
L47:
  movzbl (%rdx),%eax
  cmp    $0x2e,%al
  je     L262
  movsbl %al,%eax
  sub    $0x30,%eax
  cltq
  mov    (%rsp,%rax,4),%esi
  lea    0x1(%rsi),%r8d
  mov    %r8d,(%rsp,%rax,4)
  test   %esi,%esi
  je     L262
  mov    $0x0,%eax
  jmp    L10
L177:
  add    $0x1,%rdi
  cmp    $0x3,%rdi
  je     L119
L24:
  mov    (%r12,%rdi,8),%rcx
  lea    (%rcx,%rbx,1),%rdx
  add    %r9,%rcx
  jmp    L47
L119:
  add    $0x3,%rbx
  cmp    $0x9,%rbx
  je     L40
L20:
  mov    $0x28,%edx
  mov    $0x0,%esi
  mov    %r13,%rdi
  call   <memset@plt>
  mov    $0x0,%edi
  lea    0x3(%rbx),%r9
  jmp    L24
L40:
  add    $0x3,%ebp
  add    $0x18,%r12
  cmp    $0x9,%ebp
  jne    L18
  mov    $0x1,%eax
  jmp    L10
L217:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
bool isValidSudoku0(char **board, int rSize, int cSize) {
  int a[10];
  int space = sizeof(int) * 10;
  for (int i = 0; i < rSize; i++) {
    memset(a, 0, space);
    for (int j = 0; j < cSize; j++) {
      if (board[i][j] != '.')
        if (a[board[i][j] - '0']++)
          return false;
    }
  }
  for (int i = 0; i < cSize; i++) {
    memset(a, 0, space);
    for (int j = 0; j < rSize; j++) {
      if (board[j][i] != '.')
        if (a[board[j][i] - '0']++)
          return false;
    }
  }
  for (int row = 0; row < 9; row += 3)
    for (int col = 0; col < 9; col += 3) {
      memset(a, 0, space);
      for (int i = 0; i < 3; i++)
        for (int j = 0; j < 3; j++) {
          if (board[row + i][col + j] != '.')
            if (a[board[row + i][col + j] - '0']++)
              return false;
        }
    }
  return true;
}
```