user: 请从给定的汇编指令推导出C源代码：

```asm
<main>:
  endbr64
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x3(%rsp),%rdi
  call   <gets@plt>
  mov    %eax,%edi
  call   <strlen@plt>
  cmp    $0x3,%eax
  je     L335
  cmp    $0x2,%eax
  je     L55
  sub    $0x1,%eax
  je     L464
L451:
  lea    D165(%rip),%rdi
  call   <printf@plt>
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L60
  xor    %eax,%eax
  add    $0x18,%rsp
  ret
L55:
  movzbl 0x3(%rsp),%eax
  cmp    $0x31,%al
  je     L455
  sub    $0x32,%eax
  cmp    $0x7,%al
  ja     L393
  lea    D302(%rip),%rdx
  movzbl %al,%eax
  movslq (%rdx,%rax,4),%rax
  add    %rdx,%rax
  notrack jmp *%rax
L335:
  movzbl 0x3(%rsp),%eax
  cmp    $0x31,%al
  je     L14
  sub    $0x32,%eax
  cmp    $0x7,%al
  ja     L409
  lea    D180(%rip),%rdx
  movzbl %al,%eax
  movslq (%rdx,%rax,4),%rax
  add    %rdx,%rax
  notrack jmp *%rax
L14:
  lea    D397(%rip),%rdi
  call   <printf@plt>
L409:
  movzbl 0x4(%rsp),%eax
  cmp    $0x31,%al
  je     L270
  sub    $0x32,%eax
  cmp    $0x7,%al
  ja     L439
  lea    D376(%rip),%rdx
  movzbl %al,%eax
  movslq (%rdx,%rax,4),%rax
  add    %rdx,%rax
  notrack jmp *%rax
L270:
  lea    D359(%rip),%rdi
  call   <printf@plt>
L439:
  movzbl 0x5(%rsp),%eax
  cmp    $0x31,%al
  je     L53
  sub    $0x32,%eax
  cmp    $0x7,%al
  ja     L451
  lea    D26(%rip),%rdx
  movzbl %al,%eax
  movslq (%rdx,%rax,4),%rax
  add    %rdx,%rax
  notrack jmp *%rax
  lea    D23(%rip),%rdi
  call   <printf@plt>
  jmp    L451
  lea    D259(%rip),%rdi
  call   <printf@plt>
  jmp    L451
  lea    D224(%rip),%rdi
  call   <printf@plt>
  jmp    L451
  lea    D243(%rip),%rdi
  call   <printf@plt>
  jmp    L451
  lea    D79(%rip),%rdi
  call   <printf@plt>
  jmp    L451
  lea    D345(%rip),%rdi
  call   <printf@plt>
  jmp    L451
  lea    D173(%rip),%rdi
  call   <printf@plt>
  jmp    L451
  lea    D322(%rip),%rdi
  call   <printf@plt>
  jmp    L451
L455:
  lea    D359(%rip),%rdi
  call   <printf@plt>
L393:
  movzbl 0x4(%rsp),%eax
  cmp    $0x31,%al
  je     L53
  sub    $0x32,%eax
  cmp    $0x7,%al
  ja     L451
  lea    D39(%rip),%rdx
  movzbl %al,%eax
  movslq (%rdx,%rax,4),%rax
  add    %rdx,%rax
  notrack jmp *%rax
L464:
  movzbl 0x3(%rsp),%eax
  cmp    $0x31,%al
  je     L53
  sub    $0x32,%eax
  cmp    $0x7,%al
  ja     L451
  lea    D186(%rip),%rdx
  movzbl %al,%eax
  movslq (%rdx,%rax,4),%rax
  add    %rdx,%rax
  notrack jmp *%rax
L53:
  lea    D336(%rip),%rdi
  call   <printf@plt>
  jmp    L451
  lea    D159(%rip),%rdi
  call   <printf@plt>
  jmp    L409
  lea    D178(%rip),%rdi
  call   <printf@plt>
  jmp    L409
  lea    D429(%rip),%rdi
  call   <printf@plt>
  jmp    L409
  lea    D346(%rip),%rdi
  call   <printf@plt>
  jmp    L409
  lea    D256(%rip),%rdi
  call   <printf@plt>
  jmp    L409
  lea    D213(%rip),%rdi
  call   <printf@plt>
  jmp    L409
  lea    D64(%rip),%rdi
  call   <printf@plt>
  jmp    L409
  lea    D290(%rip),%rdi
  call   <printf@plt>
  jmp    L409
  lea    D321(%rip),%rdi
  call   <printf@plt>
  jmp    L439
  lea    D55(%rip),%rdi
  call   <printf@plt>
  jmp    L439
  lea    D312(%rip),%rdi
  call   <printf@plt>
  jmp    L439
  lea    D157(%rip),%rdi
  call   <printf@plt>
  jmp    L439
  lea    D334(%rip),%rdi
  call   <printf@plt>
  jmp    L439
  lea    D420(%rip),%rdi
  call   <printf@plt>
  jmp    L439
  lea    D298(%rip),%rdi
  call   <printf@plt>
  jmp    L439
  lea    D28(%rip),%rdi
  call   <printf@plt>
  jmp    L439
  lea    D28(%rip),%rdi
  call   <printf@plt>
  jmp    L393
  lea    D298(%rip),%rdi
  call   <printf@plt>
  jmp    L393
  lea    D420(%rip),%rdi
  call   <printf@plt>
  jmp    L393
  lea    D334(%rip),%rdi
  call   <printf@plt>
  jmp    L393
  lea    D157(%rip),%rdi
  call   <printf@plt>
  jmp    L393
  lea    D312(%rip),%rdi
  call   <printf@plt>
  jmp    L393
  lea    D55(%rip),%rdi
  call   <printf@plt>
  jmp    L393
  lea    D321(%rip),%rdi
  call   <printf@plt>
  jmp    L393
L60:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_tag: D165
type: string
name: unpack_data
arguments: data_tag: D397
type: string
name: unpack_data
arguments: data_tag: D359
type: string
name: unpack_data
arguments: data_tag: D23
type: string
name: unpack_data
arguments: data_tag: D259
type: string
name: unpack_data
arguments: data_tag: D224
type: string
name: unpack_data
arguments: data_tag: D243
type: string
name: unpack_data
arguments: data_tag: D79
type: string
name: unpack_data
arguments: data_tag: D345
type: string
name: unpack_data
arguments: data_tag: D173
type: string
name: unpack_data
arguments: data_tag: D322
type: string
name: unpack_data
arguments: data_tag: D336
type: string
name: unpack_data
arguments: data_tag: D159
type: string
name: unpack_data
arguments: data_tag: D178
type: string
name: unpack_data
arguments: data_tag: D429
type: string
name: unpack_data
arguments: data_tag: D346
type: string
name: unpack_data
arguments: data_tag: D256
type: string
name: unpack_data
arguments: data_tag: D213
type: string
name: unpack_data
arguments: data_tag: D64
type: string
name: unpack_data
arguments: data_tag: D290
type: string
name: unpack_data
arguments: data_tag: D321
type: string
name: unpack_data
arguments: data_tag: D55
type: string
name: unpack_data
arguments: data_tag: D312
type: string
name: unpack_data
arguments: data_tag: D157
type: string
name: unpack_data
arguments: data_tag: D334
type: string
name: unpack_data
arguments: data_tag: D420
type: string
name: unpack_data
arguments: data_tag: D298
type: string
name: unpack_data
arguments: data_tag: D28
type: string

tool: D165: 


tool: D397: C

tool: D359: X

tool: D23: VIII

tool: D259: VII

tool: D224: VI

tool: D243: V

tool: D79: IV

tool: D345: III

tool: D173: II

tool: D322: IX

tool: D336: I

tool: D159: CM

tool: D178: CC

tool: D429: CCC

tool: D346: CD

tool: D256: D

tool: D213: DC

tool: D64: DCC

tool: D290: DCCC

tool: D321: XC

tool: D55: XX

tool: D312: XXX

tool: D157: XL

tool: D334: L

tool: D420: LX

tool: D298: LXX

tool: D28: LXXX

assistant: ```c
int main() {
  char x[5];
  int lnth;
  lnth = strlen(gets(x));
  if (lnth == 3) {
    if (x[0] == '1')
      printf("C");
    else if (x[0] == '2')
      printf("CC");
    else if (x[0] == '3')
      printf("CCC");
    else if (x[0] == '4')
      printf("CD");
    else if (x[0] == '5')
      printf("D");
    else if (x[0] == '6')
      printf("DC");
    else if (x[0] == '7')
      printf("DCC");
    else if (x[0] == '8')
      printf("DCCC");
    else if (x[0] == '9')
      printf("CM");
    if (x[1] == '1')
      printf("X");
    else if (x[1] == '2')
      printf("XX");
    else if (x[1] == '3')
      printf("XXX");
    else if (x[1] == '4')
      printf("XL");
    else if (x[1] == '5')
      printf("L");
    else if (x[1] == '6')
      printf("LX");
    else if (x[1] == '7')
      printf("LXX");
    else if (x[1] == '8')
      printf("LXXX");
    else if (x[1] == '9')
      printf("XC");
    if (x[2] == '1')
      printf("I");
    else if (x[2] == '2')
      printf("II");
    else if (x[2] == '3')
      printf("III");
    else if (x[2] == '4')
      printf("IV");
    else if (x[2] == '5')
      printf("V");
    else if (x[2] == '6')
      printf("VI");
    else if (x[2] == '7')
      printf("VII");
    else if (x[2] == '8')
      printf("VIII");
    else if (x[2] == '9')
      printf("IX");
  } else if (lnth == 2) {
    if (x[0] == '1')
      printf("X");
    else if (x[0] == '2')
      printf("XX");
    else if (x[0] == '3')
      printf("XXX");
    else if (x[0] == '4')
      printf("XL");
    else if (x[0] == '5')
      printf("L");
    else if (x[0] == '6')
      printf("LX");
    else if (x[0] == '7')
      printf("LXX");
    else if (x[0] == '8')
      printf("LXXX");
    else if (x[0] == '9')
      printf("XC");
    if (x[1] == '1')
      printf("I");
    else if (x[1] == '2')
      printf("II");
    else if (x[1] == '3')
      printf("III");
    else if (x[1] == '4')
      printf("IV");
    else if (x[1] == '5')
      printf("V");
    else if (x[1] == '6')
      printf("VI");
    else if (x[1] == '7')
      printf("VII");
    else if (x[1] == '8')
      printf("VIII");
    else if (x[1] == '9')
      printf("IX");
  } else if (lnth == 1) {
    if (x[0] == '1')
      printf("I");
    else if (x[0] == '2')
      printf("II");
    else if (x[0] == '3')
      printf("III");
    else if (x[0] == '4')
      printf("IV");
    else if (x[0] == '5')
      printf("V");
    else if (x[0] == '6')
      printf("VI");
    else if (x[0] == '7')
      printf("VII");
    else if (x[0] == '8')
      printf("VIII");
    else if (x[0] == '9')
      printf("IX");
  }
  printf("\n");
  return 0;
}
```