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

```asm
<dfs>:
  endbr64
  push   %r15
  mov    %r9,%r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x108,%rsp
  mov    0x140(%rsp),%ebx
  mov    %ecx,0xc0(%rsp)
  mov    0x150(%rsp),%rbp
  cmp    %r8d,%ebx
  je     L92
  mov    0xc0(%rsp),%r10d
  test   %r10d,%r10d
  jle    L206
  mov    %esi,%r12d
  mov    %edx,%eax
  cmp    %esi,%edx
  jge    L206
  movslq %ebx,%rdx
  mov    %rdi,%r13
  lea    0x1(%rbx),%esi
  mov    %r8d,%r14d
  shl    $0x2,%rdx
  lea    0x5(%rbx),%r10d
  lea    0x6(%rbx),%r11d
  add    $0x1,%eax
  lea    (%r9,%rdx,1),%rcx
  lea    0x4(%r9,%rdx,1),%rdi
  cltq
  mov    %r11d,0x7c(%rsp)
  mov    %rcx,0xd8(%rsp)
  lea    0x2(%rbx),%ecx
  lea    0x7(%rbx),%r8d
  movslq %ecx,%rdx
  mov    %esi,0xd4(%rsp)
  lea    (%r9,%rdx,4),%rsi
  mov    %rdi,0xc8(%rsp)
  mov    %rsi,0xb8(%rsp)
  lea    0x3(%rbx),%esi
  movslq %esi,%rdx
  mov    %ecx,0xd0(%rsp)
  shl    $0x2,%ecx
  lea    (%r9,%rdx,4),%rdi
  mov    %esi,0xc4(%rsp)
  shl    $0x2,%esi
  mov    %rdi,0xa8(%rsp)
  lea    0x4(%rbx),%edi
  movslq %edi,%rdx
  mov    %edi,0xb4(%rsp)
  shl    $0x2,%edi
  lea    (%r9,%rdx,4),%rdx
  mov    %ecx,0xf8(%rsp)
  lea    0x0(,%r14,4),%ecx
  mov    %rdx,0x90(%rsp)
  movslq %r10d,%rdx
  lea    (%r9,%rdx,4),%rdx
  mov    %rax,0xa0(%rsp)
  lea    0x9(%rbx),%eax
  mov    %rdx,0x70(%rsp)
  movslq %r11d,%rdx
  lea    (%r9,%rdx,4),%rdx
  mov    %r10d,0x9c(%rsp)
  mov    %rdx,0x50(%rsp)
  movslq %r8d,%rdx
  lea    (%r9,%rdx,4),%rdx
  lea    0x8(%rbx),%r9d
  mov    %r8d,0x5c(%rsp)
  mov    %rdx,0x30(%rsp)
  movslq %r9d,%rdx
  lea    (%r15,%rdx,4),%rdx
  mov    %r9d,0x3c(%rsp)
  mov    %rdx,0x18(%rsp)
  lea    0x0(,%r9,4),%edx
  mov    %edx,0xe0(%rsp)
  lea    0x0(,%r8,4),%edx
  mov    %edx,0xe4(%rsp)
  lea    0x0(,%r11,4),%edx
  mov    %edx,0xec(%rsp)
  lea    0x0(,%r10,4),%edx
  mov    %edx,0xf4(%rsp)
  mov    %edi,0xe8(%rsp)
  mov    %esi,0xf0(%rsp)
  mov    %ecx,0xfc(%rsp)
  mov    %eax,0x24(%rsp)
  mov    %r15,%rax
  mov    %r13,%r15
  mov    %r14d,%r13d
  mov    %r12d,%r14d
  mov    %rax,%r12
L15:
  mov    0xa0(%rsp),%rbx
  mov    0xd8(%rsp),%rcx
  mov    -0x4(%r15,%rbx,4),%eax
  mov    %eax,(%rcx)
  mov    0xc0(%rsp),%ecx
  sub    %eax,%ecx
  mov    %ebx,%eax
  mov    %ecx,0xb0(%rsp)
  cmp    %r13d,0xd4(%rsp)
  je     L477
  mov    0xb0(%rsp),%r9d
  test   %r9d,%r9d
  jle    L101
  cmp    0xa0(%rsp),%r14d
  jle    L206
  add    $0x1,%eax
  cltq
  mov    %rax,0x88(%rsp)
  mov    %r13d,%eax
  mov    %r14d,%r13d
  mov    %eax,%r14d
L351:
  mov    0x88(%rsp),%rsi
  mov    0xc8(%rsp),%rdi
  mov    -0x4(%r15,%rsi,4),%eax
  mov    %eax,(%rdi)
  mov    0xb0(%rsp),%edi
  sub    %eax,%edi
  mov    %esi,%eax
  mov    %edi,0x98(%rsp)
  cmp    0xd0(%rsp),%r14d
  je     L155
  mov    0x98(%rsp),%r8d
  test   %r8d,%r8d
  jle    L227
  cmp    0x88(%rsp),%r13d
  jle    L133
  add    $0x1,%eax
  cltq
  mov    %rax,0x68(%rsp)
  mov    %r14d,%eax
  mov    %r13d,%r14d
  mov    %eax,%r13d
L250:
  mov    0x68(%rsp),%rbx
  mov    0x98(%rsp),%edi
  mov    0xb8(%rsp),%rcx
  mov    -0x4(%r15,%rbx,4),%eax
  sub    %eax,%edi
  mov    %eax,(%rcx)
  mov    %ebx,%eax
  mov    %edi,0x78(%rsp)
  cmp    0xc4(%rsp),%r13d
  je     L359
  mov    0x78(%rsp),%edi
  test   %edi,%edi
  jle    L495
  cmp    0x68(%rsp),%r14d
  jle    L141
  add    $0x1,%eax
  cltq
  mov    %rax,0x40(%rsp)
  mov    %r13d,%eax
  mov    %r15,%r13
  mov    %eax,%r15d
L218:
  mov    0x40(%rsp),%rbx
  mov    0x78(%rsp),%edi
  mov    0xa8(%rsp),%rsi
  mov    -0x4(%r13,%rbx,4),%eax
  sub    %eax,%edi
  mov    %eax,(%rsi)
  mov    %ebx,%eax
  mov    %edi,0x58(%rsp)
  cmp    0xb4(%rsp),%r15d
  je     L273
  mov    0x58(%rsp),%esi
  test   %esi,%esi
  jle    L2
  cmp    0x40(%rsp),%r14d
  jle    L326
  add    $0x1,%eax
  mov    %r12,0x48(%rsp)
  cltq
  mov    %rbp,0x150(%rsp)
  mov    %rax,0x28(%rsp)
  mov    %r15d,%eax
  mov    %r13,%r15
  mov    %eax,%r13d
L204:
  mov    0x28(%rsp),%rsi
  mov    0x90(%rsp),%rdi
  mov    -0x4(%r15,%rsi,4),%eax
  mov    %eax,(%rdi)
  mov    0x58(%rsp),%edi
  sub    %eax,%edi
  mov    %esi,%eax
  mov    %edi,0x38(%rsp)
  cmp    0x9c(%rsp),%r13d
  je     L499
  mov    0x38(%rsp),%ecx
  test   %ecx,%ecx
  jle    L20
  cmp    0x28(%rsp),%r14d
  jle    L158
  add    $0x1,%eax
  cltq
  mov    %rax,0x10(%rsp)
  mov    %r13d,%eax
  mov    %r14d,%r13d
  mov    %r15,%r14
  mov    %eax,%r15d
L527:
  mov    0x10(%rsp),%rdi
  mov    0x38(%rsp),%esi
  mov    0x70(%rsp),%rbx
  mov    -0x4(%r14,%rdi,4),%eax
  mov    %edi,%r12d
  sub    %eax,%esi
  mov    %eax,(%rbx)
  mov    %esi,0x20(%rsp)
  cmp    0x7c(%rsp),%r15d
  je     L205
  mov    0x20(%rsp),%edx
  test   %edx,%edx
  jle    L397
  cmp    0x10(%rsp),%r13d
  jle    L422
  add    $0x1,%r12d
  movslq %r12d,%r12
L320:
  mov    -0x4(%r14,%r12,4),%eax
  mov    0x20(%rsp),%esi
  mov    %r12d,%ebp
  mov    0x50(%rsp),%rbx
  sub    %eax,%esi
  mov    %eax,(%rbx)
  mov    %esi,0x4(%rsp)
  cmp    0x5c(%rsp),%r15d
  je     L521
  mov    0x4(%rsp),%eax
  test   %eax,%eax
  jle    L366
  cmp    %r12d,%r13d
  jle    L122
  add    $0x1,%ebp
  mov    %r12,0x80(%rsp)
  mov    %r15d,%r12d
  mov    %r14,%r15
  movslq %ebp,%rbp
L285:
  mov    -0x4(%r15,%rbp,4),%edx
  mov    0x30(%rsp),%rax
  mov    0x4(%rsp),%r14d
  mov    %edx,(%rax)
  sub    %edx,%r14d
  cmp    0x3c(%rsp),%r12d
  je     L66
  test   %r14d,%r14d
  jle    L61
  cmp    %ebp,%r13d
  jle    L446
  lea    -0x1(%r13),%ecx
  lea    0x1(%rbp),%ebx
  mov    %r13d,%esi
  mov    %rbp,0x60(%rsp)
  sub    %ebp,%ecx
  movslq %ebx,%rbx
  mov    %r15,%r13
  mov    %esi,%r15d
  lea    0x2(%rbp,%rcx,1),%rax
  mov    0x48(%rsp),%rbp
  mov    %rax,0x8(%rsp)
  mov    %r12d,%eax
  mov    %rbx,%r12
  mov    %eax,%ebx
L428:
  mov    -0x4(%r13,%r12,4),%edx
  mov    0x18(%rsp),%rax
  mov    %r14d,%ecx
  mov    %rbp,%r9
  mov    %ebx,%r8d
  mov    %r15d,%esi
  mov    %r13,%rdi
  mov    %edx,(%rax)
  sub    %edx,%ecx
  mov    %r12d,%edx
  add    $0x1,%r12
  push   0x158(%rsp)
  push   0x158(%rsp)
  push   0x158(%rsp)
  mov    0x3c(%rsp),%eax
  push   %rax
  call   <dfs>
  add    $0x20,%rsp
  cmp    0x8(%rsp),%r12
  jne    L428
  mov    %r15d,%eax
  mov    0x60(%rsp),%rbp
  mov    %r13,%r15
  mov    %ebx,%r12d
  mov    %eax,%r13d
L161:
  add    $0x1,%rbp
  jmp    L285
  nopl   0x0(%rax)
L92:
  test   %ecx,%ecx
  je     L520
L206:
  add    $0x108,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopw   0x0(%rax,%rax,1)
L66:
  test   %r14d,%r14d
  jne    L61
  mov    0x150(%rsp),%rax
  mov    0xe0(%rsp),%r14d
  mov    0x148(%rsp),%rsi
  movslq (%rax),%rax
  mov    %r14d,%edi
  lea    (%rsi,%rax,8),%rbx
  call   <malloc@plt>
  mov    0x48(%rsp),%rsi
  mov    %r14d,%edx
  mov    %rax,(%rbx)
  mov    0x150(%rsp),%rax
  mov    0x148(%rsp),%rbx
  movslq (%rax),%rax
  mov    (%rbx,%rax,8),%rdi
  call   <memcpy@plt>
  mov    0x150(%rsp),%rax
  mov    0x158(%rsp),%rdi
  movslq (%rax),%rax
  mov    %r12d,(%rdi,%rax,4)
  mov    0x150(%rsp),%rax
  addl   $0x1,(%rax)
  nopl   (%rax)
L61:
  cmp    %ebp,%r13d
  jg     L161
L446:
  mov    %r15,%r14
  mov    %r12d,%r15d
  mov    0x80(%rsp),%r12
L225:
  add    $0x1,%r12
  jmp    L320
L521:
  test   %esi,%esi
  jne    L366
  mov    0x150(%rsp),%rax
  mov    0x148(%rsp),%rdi
  mov    0xe4(%rsp),%ebp
  movslq (%rax),%rax
  lea    (%rdi,%rax,8),%rbx
  mov    %ebp,%edi
  call   <malloc@plt>
  mov    0x148(%rsp),%rcx
  mov    0x48(%rsp),%rsi
  mov    %ebp,%edx
  mov    %rax,(%rbx)
  mov    0x150(%rsp),%rax
  movslq (%rax),%rax
  mov    (%rcx,%rax,8),%rdi
  call   <memcpy@plt>
  mov    0x150(%rsp),%rax
  mov    0x158(%rsp),%rsi
  movslq (%rax),%rax
  mov    %r15d,(%rsi,%rax,4)
  mov    0x150(%rsp),%rax
  addl   $0x1,(%rax)
  nopl   0x0(%rax)
L366:
  cmp    %r12d,%r13d
  jg     L225
L122:
  addq   $0x1,0x10(%rsp)
  jmp    L527
  nopl   0x0(%rax)
L205:
  test   %esi,%esi
  jne    L397
  mov    0x150(%rsp),%rax
  mov    0x148(%rsp),%rdi
  mov    0xec(%rsp),%ebp
  movslq (%rax),%rax
  lea    (%rdi,%rax,8),%rbx
  mov    %ebp,%edi
  call   <malloc@plt>
  mov    0x148(%rsp),%rcx
  mov    0x48(%rsp),%rsi
  mov    %ebp,%edx
  mov    %rax,(%rbx)
  mov    0x150(%rsp),%rax
  movslq (%rax),%rax
  mov    (%rcx,%rax,8),%rdi
  call   <memcpy@plt>
  mov    0x150(%rsp),%rax
  mov    0x158(%rsp),%rsi
  movslq (%rax),%rax
  mov    %r15d,(%rsi,%rax,4)
  mov    0x150(%rsp),%rax
  addl   $0x1,(%rax)
  nopl   0x0(%rax)
L397:
  cmp    0x10(%rsp),%r13d
  jg     L122
L422:
  mov    %r15d,%eax
  mov    %r14,%r15
  mov    %r13d,%r14d
  mov    %eax,%r13d
L240:
  addq   $0x1,0x28(%rsp)
  jmp    L204
  nopw   0x0(%rax,%rax,1)
L499:
  test   %edi,%edi
  jne    L20
  mov    0x150(%rsp),%rax
  mov    0xf4(%rsp),%ebp
  mov    0x148(%rsp),%rbx
  movslq (%rax),%rax
  mov    %ebp,%edi
  lea    (%rbx,%rax,8),%rbx
  call   <malloc@plt>
  mov    0x48(%rsp),%rsi
  mov    %ebp,%edx
  mov    %rax,(%rbx)
  mov    0x150(%rsp),%rax
  mov    0x148(%rsp),%rbx
  movslq (%rax),%rax
  mov    (%rbx,%rax,8),%rdi
  call   <memcpy@plt>
  mov    0x150(%rsp),%rax
  mov    0x158(%rsp),%rbx
  movslq (%rax),%rax
  mov    %r13d,(%rbx,%rax,4)
  mov    0x150(%rsp),%rax
  addl   $0x1,(%rax)
  nopl   0x0(%rax)
L20:
  cmp    0x28(%rsp),%r14d
  jg     L240
L158:
  mov    %r13d,%eax
  mov    0x48(%rsp),%r12
  mov    0x150(%rsp),%rbp
  mov    %r15,%r13
  mov    %eax,%r15d
L278:
  addq   $0x1,0x40(%rsp)
  jmp    L218
  nopl   0x0(%rax)
L273:
  test   %edi,%edi
  jne    L2
  movslq 0x0(%rbp),%rax
  mov    0x148(%rsp),%rbx
  mov    0xe8(%rsp),%edi
  lea    (%rbx,%rax,8),%rbx
  call   <malloc@plt>
  mov    0x148(%rsp),%rcx
  mov    0xe8(%rsp),%edx
  mov    %r12,%rsi
  mov    %rax,(%rbx)
  movslq 0x0(%rbp),%rax
  mov    (%rcx,%rax,8),%rdi
  call   <memcpy@plt>
  movslq 0x0(%rbp),%rax
  mov    0x158(%rsp),%rbx
  mov    %r15d,(%rbx,%rax,4)
  addl   $0x1,0x0(%rbp)
  xchg   %ax,%ax
L2:
  cmp    0x40(%rsp),%r14d
  jg     L278
L326:
  mov    %r15d,%eax
  mov    %r13,%r15
  mov    %eax,%r13d
L486:
  addq   $0x1,0x68(%rsp)
  jmp    L250
  nopl   0x0(%rax,%rax,1)
L359:
  test   %edi,%edi
  jne    L495
  movslq 0x0(%rbp),%rax
  mov    0x148(%rsp),%rbx
  mov    0xf0(%rsp),%edi
  lea    (%rbx,%rax,8),%rbx
  call   <malloc@plt>
  mov    0xf0(%rsp),%edx
  mov    %r12,%rsi
  mov    %rax,(%rbx)
  mov    0x148(%rsp),%rbx
  movslq 0x0(%rbp),%rax
  mov    (%rbx,%rax,8),%rdi
  call   <memcpy@plt>
  movslq 0x0(%rbp),%rax
  mov    0x158(%rsp),%rbx
  mov    %r13d,(%rbx,%rax,4)
  addl   $0x1,0x0(%rbp)
  cs nopw 0x0(%rax,%rax,1)
L495:
  cmp    0x68(%rsp),%r14d
  jg     L486
L141:
  mov    %r13d,%eax
  mov    %r14d,%r13d
  mov    %eax,%r14d
L563:
  addq   $0x1,0x88(%rsp)
  jmp    L351
  xchg   %ax,%ax
L155:
  test   %edi,%edi
  jne    L227
  mov    0x148(%rsp),%rcx
  movslq 0x0(%rbp),%rax
  mov    0xf8(%rsp),%edi
  lea    (%rcx,%rax,8),%rbx
  call   <malloc@plt>
  mov    0x148(%rsp),%rsi
  mov    0xf8(%rsp),%edx
  mov    %rax,(%rbx)
  movslq 0x0(%rbp),%rax
  mov    (%rsi,%rax,8),%rdi
  mov    %r12,%rsi
  call   <memcpy@plt>
  movslq 0x0(%rbp),%rax
  mov    0x158(%rsp),%rbx
  mov    %r14d,(%rbx,%rax,4)
  addl   $0x1,0x0(%rbp)
  cs nopw 0x0(%rax,%rax,1)
L227:
  cmp    0x88(%rsp),%r13d
  jg     L563
L133:
  mov    %r14d,%eax
  mov    %r13d,%r14d
  mov    %eax,%r13d
L143:
  addq   $0x1,0xa0(%rsp)
  jmp    L15
  nopl   0x0(%rax)
L477:
  test   %ecx,%ecx
  je     L146
L101:
  cmp    0xa0(%rsp),%r14d
  jg     L143
  jmp    L206
L146:
  mov    0x148(%rsp),%rcx
  movslq 0x0(%rbp),%rax
  mov    0xfc(%rsp),%edi
  lea    (%rcx,%rax,8),%rbx
  call   <malloc@plt>
  mov    0x148(%rsp),%rsi
  mov    0xfc(%rsp),%edx
  mov    %rax,(%rbx)
  movslq 0x0(%rbp),%rax
  mov    (%rsi,%rax,8),%rdi
  mov    %r12,%rsi
  call   <memcpy@plt>
  movslq 0x0(%rbp),%rax
  mov    0x158(%rsp),%rdi
  mov    0xd4(%rsp),%ebx
  mov    %ebx,(%rdi,%rax,4)
  addl   $0x1,0x0(%rbp)
  cmp    0xa0(%rsp),%r14d
  jg     L143
  jmp    L206
L520:
  mov    0x148(%rsp),%rcx
  movslq 0x0(%rbp),%rax
  lea    0x0(,%rbx,4),%r12d
  mov    %r12d,%edi
  lea    (%rcx,%rax,8),%r13
  call   <malloc@plt>
  mov    0x148(%rsp),%rdi
  mov    %r15,%rsi
  mov    %r12d,%edx
  mov    %rax,0x0(%r13)
  movslq 0x0(%rbp),%rax
  mov    (%rdi,%rax,8),%rdi
  call   <memcpy@plt>
  movslq 0x0(%rbp),%rax
  mov    0x158(%rsp),%rsi
  mov    %ebx,(%rsi,%rax,4)
  addl   $0x1,0x0(%rbp)
  jmp    L206
```

assistant: ```c
void dfs(int *nums, int size, int start, int target, int k, int *solution, int len, int **results, int *count, int *col_sizes) {
  int i;
  if (len == k) {
    if (target == 0) {
      results[*count] = malloc(len * sizeof(int));
      memcpy(results[*count], solution, len * sizeof(int));
      col_sizes[*count] = len;
      (*count)++;
    }
  } else if (target > 0) {
    for (i = start; i < size; i++) {
      solution[len] = nums[i];
      dfs(nums, size, i + 1, target - nums[i], k, solution, len + 1, results, count, col_sizes);
    }
  }
}
```