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

```asm
<main>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x2e8,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x2d8(%rsp)
  xor    %eax,%eax
  mov    $0x2bc,%edi
  call   <malloc@plt>
  mov    %rax,%r15
  mov    $0x2bc,%edi
  call   <malloc@plt>
  mov    %rax,%r14
  lea    0x10(%rsp),%rax
  mov    %rax,(%rsp)
  lea    0x2cc(%rsp),%rdx
L211:
  movb   $0x30,(%rax)
  add    $0x1,%rax
  cmp    %rdx,%rax
  jne    L211
  mov    %r14,%rdx
  mov    %r15,%rsi
  lea    D5(%rip),%rdi
  call   <scanf@plt>
  mov    %r15,%rdi
  call   <strlen@plt>
  mov    %eax,%esi
  mov    %r15,%rdi
  call   <resort@plt>
  mov    %r14,%rdi
  call   <strlen@plt>
  mov    %eax,%esi
  mov    %r14,%rdi
  call   <resort@plt>
  mov    %r14,%rdi
  call   <strlen@plt>
  mov    %eax,%ebx
  mov    %r15,%rdi
  call   <strlen@plt>
  mov    %eax,%edi
  mov    %ebx,%esi
  call   <max@plt>
  mov    %eax,%r13d
  test   %eax,%eax
  jle    L236
  mov    (%rsp),%rcx
  mov    %rcx,%rbp
  mov    $0x0,%ebx
  mov    $0x0,%r12d
  mov    %r15,%rax
  sub    %rcx,%rax
  mov    %rax,0x8(%rsp)
  jmp    L229
L22:
  cmp    $0x2f,%bl
  jg     L147
  add    $0xa,%ebx
  mov    %bl,0x0(%rbp)
  mov    $0xffffffff,%ebx
L133:
  add    $0x1,%r12d
  add    $0x1,%rbp
  cmp    %r12d,%r13d
  je     L134
L229:
  mov    %r15,%rdi
  call   <strlen@plt>
  cmp    %r12d,%eax
  jle    L174
  movzbl 0x0(%rbp),%eax
  mov    0x8(%rsp),%rcx
  movzbl (%rcx,%rbp,1),%edx
  lea    -0x30(%rax,%rdx,1),%eax
  mov    %al,0x0(%rbp)
L174:
  mov    %r14,%rdi
  call   <strlen@plt>
  cmp    %r12d,%eax
  jle    L2
  movzbl 0x0(%rbp),%eax
  add    $0x30,%eax
  mov    %r14,%rdx
  sub    (%rsp),%rdx
  sub    (%rdx,%rbp,1),%al
  mov    %al,0x0(%rbp)
L2:
  add    0x0(%rbp),%bl
  mov    %bl,0x0(%rbp)
  cmp    $0x39,%bl
  jle    L22
  sub    $0xa,%ebx
  mov    %bl,0x0(%rbp)
  mov    $0x1,%ebx
  jmp    L133
L147:
  mov    $0x0,%ebx
  jmp    L133
L134:
  movslq %r12d,%rax
  lea    0x10(%rsp,%rax,1),%rax
L228:
  cmpb   $0x30,(%rax)
  jne    L47
  test   %ebx,%ebx
  jne    L47
  sub    $0x1,%rax
  sub    $0x1,%r12d
  jne    L228
L75:
  mov    %r12d,%r13d
L129:
  test   %r13d,%r13d
  js     L167
  movslq %r13d,%r13
  lea    0x10(%rsp),%rbp
  jmp    L232
L47:
  test   %ebx,%ebx
  je     L75
  lea    -0x1(%r12),%r13d
  jns    L33
  mov    $0x2d,%edi
  call   <putchar@plt>
  jmp    L129
L236:
  mov    $0x0,%ebx
L33:
  test   %ebx,%ebx
  jle    L129
  mov    $0x31,%edi
  call   <putchar@plt>
  jmp    L129
L114:
  movsbl 0x0(%r13,%rbp,1),%edi
  call   <putchar@plt>
  sub    $0x1,%r13
  test   %r13d,%r13d
  js     L167
L232:
  test   %ebx,%ebx
  jns    L114
  mov    $0x69,%eax
  sub    0x0(%r13,%rbp,1),%al
  mov    %al,0x0(%r13,%rbp,1)
  jmp    L114
L167:
  mov    %r15,%rdi
  call   <free@plt>
  mov    %r14,%rdi
  call   <free@plt>
  mov    0x2d8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L127
  mov    $0x0,%eax
  add    $0x2e8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L127:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_tag: D5
type_infered: string

tool: D5: %s%s

assistant: ```c
int main(int argc, char *argv[]) {
  char *a, *b;
  char c[700];
  int i, mark = 0, a0 = 0, b0 = 0;
  a = (char *)malloc(700 * sizeof(char));
  b = (char *)malloc(700 * sizeof(char));
  for (i = 0; i < sizeof(c); i++)
    c[i] = '0';
  scanf("%s%s", a, b);
  b0 = 1;
  resort(a, strlen(a));
  resort(b, strlen(b));
  int size = max(strlen(a), strlen(b));
  for (i = 0; i < size; i++) {
    if (i < strlen(a)) {
      if (!(a0 == b0) && a0)
        c[i] -= a[i] - '0';
      else
        c[i] += a[i] - '0';
    }
    if (i < strlen(b)) {
      if (!(a0 == b0) && b0)
        c[i] -= b[i] - '0';
      else
        c[i] += b[i] - '0';
    }
    c[i] += mark;
    mark = 0;
    if (c[i] > '9') {
      c[i] -= 10;
      mark = 1;
    }
    if (c[i] < '0') {
      c[i] += 10;
      mark = -1;
    }
  }
  for (i = size; i > 0; i--)
    if (c[i] != '0' || mark) {
      if (mark)
        i--;
      break;
    }
  if (mark < 0 || a0 && b0)
    printf("-");
  if (mark > 0)
    printf("1");
  for (; i >= 0; i--) {
    if (mark < 0 && (a0 != b0))
      c[i] = '9' - (c[i] - '0');
    printf("%c", c[i]);
  }
  free(a);
  free(b);
  return 0;
}
```