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

```asm
<solve>:
  endbr64
  test   %edx,%edx
  jne    L48
  ret
  nopl   0x0(%rax)
L48:
  push   %r15
  mov    %rsi,%r15
  push   %r14
  push   %r13
  lea    D9(%rip),%r13
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  mov    %edx,%ebx
  sub    $0x28,%rsp
  movsbl (%rdi),%esi
  mov    %r15,%rdi
  call   <strchr@plt>
  mov    %rax,%r12
  sub    %r15,%r12
  cmp    %r15d,%eax
  je     L186
  movsbl 0x1(%rbp),%esi
  mov    %r15,%rdi
  call   <strchr@plt>
  mov    %rax,%rcx
  sub    %r15,%rcx
  mov    %rcx,(%rsp)
  cmp    %r15d,%eax
  jne    L3
  mov    (%rsp),%rax
  mov    %r12d,%r14d
  sub    %eax,%r14d
  sub    $0x1,%r14d
  jne    L69
L39:
  movsbl 0x1(%rbp),%esi
  mov    %r13,%rdi
  call   <naive_printf@plt>
L186:
  sub    %r12d,%ebx
  sub    $0x1,%ebx
  je     L155
  movslq %r12d,%r12
  add    $0x1,%r12
  add    %r12,%r15
  add    %rbp,%r12
  movsbl (%r12),%esi
  mov    %r15,%rdi
  call   <strchr@plt>
  mov    %rax,%r14
  sub    %r15,%r14
  cmp    %r15d,%eax
  jne    L131
  sub    %r14d,%ebx
  sub    $0x1,%ebx
  jne    L101
L143:
  movsbl (%r12),%esi
  mov    %r13,%rdi
  call   <naive_printf@plt>
L155:
  movsbl 0x0(%rbp),%esi
  add    $0x28,%rsp
  mov    %r13,%rdi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1070 <naive_printf@plt>
  nopw   0x0(%rax,%rax,1)
L101:
  movslq %r14d,%r14
  add    $0x1,%r14
  add    %r14,%r15
  add    %r12,%r14
  movsbl (%r14),%esi
  mov    %r15,%rdi
  call   <strchr@plt>
  mov    %rax,%rcx
  sub    %r15,%rcx
  cmp    %r15d,%eax
  je     L172
  movsbl 0x1(%r14),%esi
  mov    %r15,%rdi
  mov    %rcx,0x8(%rsp)
  call   <strchr@plt>
  lea    0x2(%r14),%rdi
  mov    %r15,%rsi
  sub    %r15,%rax
  mov    %eax,%edx
  mov    %rax,(%rsp)
  call   <solve>
  mov    (%rsp),%rax
  mov    0x8(%rsp),%rcx
  movslq %eax,%rsi
  mov    %ecx,%edx
  mov    %rcx,(%rsp)
  sub    %eax,%edx
  lea    0x1(%r15,%rsi,1),%r8
  lea    0x2(%r14,%rsi,1),%rdi
  sub    $0x1,%edx
  mov    %r8,%rsi
  call   <solve>
  movsbl 0x1(%r14),%esi
  mov    %r13,%rdi
  call   <naive_printf@plt>
  mov    (%rsp),%rcx
L172:
  sub    %ecx,%ebx
  sub    $0x1,%ebx
  je     L120
  movslq %ecx,%rcx
  lea    0x1(%rcx),%rax
  lea    (%r15,%rax,1),%rcx
  lea    (%r14,%rax,1),%r15
  movsbl (%r15),%esi
  mov    %rcx,%rdi
  mov    %rcx,(%rsp)
  call   <strchr@plt>
  mov    (%rsp),%rcx
  lea    0x1(%r15),%rdi
  sub    %rcx,%rax
  mov    %rcx,%rsi
  mov    %eax,%edx
  mov    %rax,0x8(%rsp)
  call   <solve>
  mov    0x8(%rsp),%rax
  mov    (%rsp),%rcx
  movslq %eax,%rdi
  sub    %eax,%ebx
  add    $0x1,%rdi
  lea    -0x1(%rbx),%edx
  lea    (%rcx,%rdi,1),%rsi
  add    %r15,%rdi
  call   <solve>
  movsbl (%r15),%esi
  mov    %r13,%rdi
  call   <naive_printf@plt>
L120:
  movsbl (%r14),%esi
  mov    %r13,%rdi
  call   <naive_printf@plt>
  jmp    L143
  nopl   0x0(%rax,%rax,1)
L131:
  movsbl 0x1(%r12),%esi
  mov    %r15,%rdi
  call   <strchr@plt>
  mov    %rax,%rcx
  sub    %r15,%rcx
  cmp    %r15d,%eax
  je     L108
  movsbl 0x2(%r12),%esi
  mov    %r15,%rdi
  mov    %rcx,0x8(%rsp)
  call   <strchr@plt>
  lea    0x3(%r12),%rdi
  mov    %r15,%rsi
  sub    %r15,%rax
  mov    %eax,%edx
  mov    %rax,(%rsp)
  call   <solve>
  mov    (%rsp),%rax
  mov    0x8(%rsp),%rcx
  movslq %eax,%rsi
  mov    %ecx,%edx
  mov    %rcx,(%rsp)
  add    $0x1,%rsi
  sub    %eax,%edx
  lea    (%r15,%rsi,1),%r8
  lea    0x2(%r12,%rsi,1),%rdi
  sub    $0x1,%edx
  mov    %r8,%rsi
  call   <solve>
  movsbl 0x2(%r12),%esi
  mov    %r13,%rdi
  call   <naive_printf@plt>
  mov    (%rsp),%rcx
L108:
  mov    %r14d,%r8d
  sub    %ecx,%r8d
  sub    $0x1,%r8d
  mov    %r8d,0x8(%rsp)
  je     L117
  movslq %ecx,%rax
  lea    0x1(%r15,%rax,1),%r9
  lea    0x2(%r12,%rax,1),%rax
  movsbl (%rax),%esi
  mov    %r9,%rdi
  mov    %r9,0x10(%rsp)
  mov    %rax,(%rsp)
  call   <strchr@plt>
  mov    0x10(%rsp),%r9
  sub    %r9,%rax
  mov    %r9,%rsi
  mov    %eax,%edx
  mov    %rax,0x18(%rsp)
  mov    (%rsp),%rax
  lea    0x1(%rax),%rdi
  call   <solve>
  mov    0x18(%rsp),%rax
  mov    0x8(%rsp),%r8d
  mov    0x10(%rsp),%r9
  movslq %eax,%rdi
  sub    %eax,%r8d
  add    $0x1,%rdi
  lea    -0x1(%r8),%edx
  lea    (%r9,%rdi,1),%rsi
  add    (%rsp),%rdi
  call   <solve>
  mov    (%rsp),%rax
  mov    %r13,%rdi
  movsbl (%rax),%esi
  call   <naive_printf@plt>
L117:
  movsbl 0x1(%r12),%esi
  mov    %r13,%rdi
  sub    %r14d,%ebx
  call   <naive_printf@plt>
  sub    $0x1,%ebx
  je     L143
  jmp    L101
  nopl   0x0(%rax)
L69:
  cltq
  lea    0x1(%r15,%rax,1),%r8
  lea    0x2(%rbp,%rax,1),%rax
  movsbl (%rax),%esi
  mov    %r8,%rdi
  mov    %r8,0x8(%rsp)
  mov    %rax,(%rsp)
  call   <strchr@plt>
  mov    0x8(%rsp),%r8
  mov    %rax,%r10
  sub    %r8,%r10
  cmp    %r8d,%eax
  je     L122
  mov    (%rsp),%rax
  mov    %r8,%rdi
  mov    %r10,0x18(%rsp)
  movsbl 0x1(%rax),%esi
  call   <strchr@plt>
  mov    0x8(%rsp),%r8
  sub    %r8,%rax
  mov    %r8,%rsi
  mov    %eax,%edx
  mov    %rax,0x10(%rsp)
  mov    (%rsp),%rax
  lea    0x2(%rax),%rdi
  call   <solve>
  mov    0x18(%rsp),%r10
  mov    0x10(%rsp),%rax
  mov    0x8(%rsp),%r8
  mov    %r10d,%edx
  movslq %eax,%rsi
  mov    %r10,0x10(%rsp)
  sub    %eax,%edx
  mov    (%rsp),%rax
  lea    0x1(%r8,%rsi,1),%r9
  sub    $0x1,%edx
  lea    0x2(%rax,%rsi,1),%rdi
  mov    %r9,%rsi
  call   <solve>
  mov    (%rsp),%rax
  mov    %r13,%rdi
  movsbl 0x1(%rax),%esi
  call   <naive_printf@plt>
  mov    0x10(%rsp),%r10
  mov    0x8(%rsp),%r8
L122:
  sub    %r10d,%r14d
  mov    %r14d,%r9d
  sub    $0x1,%r9d
  mov    %r9d,0x8(%rsp)
  je     L207
  movslq %r10d,%r14
  add    $0x1,%r14
  add    %r14,%r8
  add    (%rsp),%r14
  movsbl (%r14),%esi
  mov    %r8,%rdi
  mov    %r8,0x10(%rsp)
  call   <strchr@plt>
  mov    0x10(%rsp),%r8
  lea    0x1(%r14),%rdi
  sub    %r8,%rax
  mov    %r8,%rsi
  mov    %eax,%edx
  mov    %rax,0x18(%rsp)
  call   <solve>
  mov    0x18(%rsp),%rax
  mov    0x8(%rsp),%r9d
  mov    0x10(%rsp),%r8
  movslq %eax,%rdi
  sub    %eax,%r9d
  add    $0x1,%rdi
  lea    -0x1(%r9),%edx
  lea    (%r8,%rdi,1),%rsi
  add    %r14,%rdi
  call   <solve>
  movsbl (%r14),%esi
  mov    %r13,%rdi
  call   <naive_printf@plt>
L207:
  mov    (%rsp),%rax
  mov    %r13,%rdi
  movsbl (%rax),%esi
  call   <naive_printf@plt>
  jmp    L39
  nopl   0x0(%rax,%rax,1)
L3:
  movsbl 0x2(%rbp),%esi
  mov    %r15,%rdi
  call   <strchr@plt>
  mov    %rax,%r14
  sub    %r15,%r14
  cmp    %r15d,%eax
  je     L121
  movsbl 0x3(%rbp),%esi
  mov    %r15,%rdi
  call   <strchr@plt>
  lea    0x4(%rbp),%rdi
  mov    %r15,%rsi
  sub    %r15,%rax
  mov    %eax,%edx
  mov    %rax,0x8(%rsp)
  call   <solve>
  mov    0x8(%rsp),%rax
  mov    %r14d,%edx
  movslq %eax,%rsi
  sub    %eax,%edx
  add    $0x1,%rsi
  sub    $0x1,%edx
  lea    (%r15,%rsi,1),%r8
  lea    0x3(%rbp,%rsi,1),%rdi
  mov    %r8,%rsi
  call   <solve>
  movsbl 0x3(%rbp),%esi
  mov    %r13,%rdi
  call   <naive_printf@plt>
L121:
  mov    (%rsp),%r8d
  sub    %r14d,%r8d
  sub    $0x1,%r8d
  mov    %r8d,0x8(%rsp)
  je     L119
  movslq %r14d,%r14
  add    $0x1,%r14
  lea    (%r15,%r14,1),%r9
  lea    0x2(%rbp,%r14,1),%r14
  movsbl (%r14),%esi
  mov    %r9,%rdi
  mov    %r9,0x10(%rsp)
  call   <strchr@plt>
  mov    0x10(%rsp),%r9
  lea    0x1(%r14),%rdi
  sub    %r9,%rax
  mov    %r9,%rsi
  mov    %eax,%edx
  mov    %rax,0x18(%rsp)
  call   <solve>
  mov    0x18(%rsp),%rax
  mov    0x8(%rsp),%r8d
  mov    0x10(%rsp),%r9
  movslq %eax,%rdi
  sub    %eax,%r8d
  add    $0x1,%rdi
  lea    -0x1(%r8),%edx
  lea    (%r9,%rdi,1),%rsi
  add    %r14,%rdi
  call   <solve>
  movsbl (%r14),%esi
  mov    %r13,%rdi
  call   <naive_printf@plt>
L119:
  movsbl 0x2(%rbp),%esi
  mov    %r13,%rdi
  mov    %r12d,%r14d
  call   <naive_printf@plt>
  mov    (%rsp),%rax
  sub    %eax,%r14d
  sub    $0x1,%r14d
  je     L39
  jmp    L69
```

tool_calls: name: unpack_data
arguments: data_tag: D9
type_guessed: string

tool: D9: %c

assistant: ```c
void solve(char *s1, char *s2, int len) {
  if (len == 0)
    return;
  int nlen = strchr(s2, *s1) - s2;
  solve(s1 + 1, s2, nlen);
  solve(s1 + nlen + 1, s2 + nlen + 1, len - nlen - 1);
  naive_printf("%c", (*s1));
}
```