user: What would the C source look like for the assembly code provided here:

```asm
<rec>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  mov    %rdi,%r12
  push   %rbp
  push   %rbx
  sub    $0xe8,%rsp
  mov    %edx,0x58(%rsp)
  mov    %r8d,0x5c(%rsp)
  cmp    %ecx,%esi
  je     L18
  sub    %ecx,%r8d
  lea    (%rsi,%r8,1),%eax
  mov    %eax,0xcc(%rsp)
  add    $0x1,%eax
  cmp    %eax,%edx
  jg     L249
  movslq %esi,%rax
  lea    0x8(%rsi),%edx
  lea    0x1(%rsi),%ebx
  mov    %esi,0xd8(%rsp)
  lea    0x4(,%rax,4),%rax
  mov    %ebx,0x24(%rsp)
  mov    %r12,%rbp
  mov    %r8d,%r15d
  lea    (%rdi,%rax,1),%rdi
  lea    0x4(%r12,%rax,1),%rax
  mov    %edx,0xb4(%rsp)
  mov    %rax,0x78(%rsp)
  lea    0x2(%rsi),%eax
  mov    %eax,0x88(%rsp)
  cltq
  lea    0x4(%r12,%rax,4),%rax
  mov    %rdi,0x68(%rsp)
  mov    %rax,0x80(%rsp)
  lea    0x3(%rsi),%eax
  mov    %eax,0x8c(%rsp)
  cltq
  lea    0x4(%r12,%rax,4),%rax
  mov    %rax,0x90(%rsp)
  lea    0x4(%rsi),%eax
  mov    %eax,0x9c(%rsp)
  cltq
  lea    0x4(%r12,%rax,4),%rax
  mov    %rax,0xa0(%rsp)
  lea    0x5(%rsi),%eax
  mov    %eax,0xb0(%rsp)
  cltq
  lea    0x4(%r12,%rax,4),%rax
  mov    %rax,0x38(%rsp)
  lea    0x6(%rsi),%eax
  mov    %eax,0xc(%rsp)
  cltq
  lea    0x4(%r12,%rax,4),%rax
  mov    %rax,0x40(%rsp)
  lea    0x7(%rsi),%eax
  mov    %eax,0x10(%rsp)
  cltq
  lea    0x4(%r12,%rax,4),%rax
  mov    %rax,0xa8(%rsp)
  movslq %edx,%rax
  lea    0x4(%r12,%rax,4),%rax
  mov    %ecx,%r12d
  mov    %rax,0x48(%rsp)
  lea    (%rdx,%r8,1),%eax
  mov    %eax,0x1c(%rsp)
L133:
  mov    0x58(%rsp),%edx
  mov    0x68(%rsp),%rax
  mov    0x24(%rsp),%ecx
  mov    %edx,(%rax)
  mov    %edx,%eax
  mov    %edx,0x98(%rsp)
  add    $0x1,%edx
  mov    %edx,0x58(%rsp)
  cmp    %r12d,%ecx
  je     L226
  lea    (%rcx,%r15,1),%esi
  mov    %edx,0x28(%rsp)
  mov    %esi,0xc8(%rsp)
  cmp    %eax,%esi
  jl     L356
  mov    %r12d,%eax
  mov    %rbp,%r12
  mov    %eax,%ebp
L41:
  mov    0x28(%rsp),%ecx
  mov    0x78(%rsp),%rax
  mov    0x88(%rsp),%edi
  mov    %ecx,(%rax)
  mov    %ecx,%eax
  mov    %ecx,0x74(%rsp)
  add    $0x1,%ecx
  mov    %ecx,0x28(%rsp)
  cmp    %edi,%ebp
  je     L295
  lea    (%rdi,%r15,1),%ebx
  mov    %ecx,0x2c(%rsp)
  mov    %ebx,0xc4(%rsp)
  cmp    %eax,%ebx
  jl     L306
  mov    %r15d,%r14d
  mov    %r12,%r15
L322:
  mov    0x2c(%rsp),%esi
  mov    0x80(%rsp),%rax
  mov    0x8c(%rsp),%ecx
  mov    %esi,(%rax)
  mov    %esi,%eax
  mov    %esi,0xbc(%rsp)
  add    $0x1,%esi
  mov    %esi,0x2c(%rsp)
  cmp    %ecx,%ebp
  je     L10
  lea    (%rcx,%r14,1),%edx
  mov    %esi,0x30(%rsp)
  mov    %edx,0xc0(%rsp)
  cmp    %eax,%edx
  jl     L238
  mov    %r15,%r13
  mov    %ebp,%r15d
L192:
  mov    0x30(%rsp),%edi
  mov    0x90(%rsp),%rax
  mov    0x9c(%rsp),%esi
  mov    %edi,(%rax)
  mov    %edi,%eax
  mov    %edi,0x70(%rsp)
  add    $0x1,%edi
  mov    %edi,0x30(%rsp)
  cmp    %esi,%r15d
  je     L234
  lea    (%rsi,%r14,1),%ecx
  mov    %edi,0x34(%rsp)
  mov    %ecx,0xb8(%rsp)
  cmp    %eax,%ecx
  jl     L0
  mov    %r14d,0x20(%rsp)
  mov    %r13,%r12
  mov    %r15d,%ebp
L267:
  mov    0x34(%rsp),%r13d
  mov    0xa0(%rsp),%rax
  mov    0xb0(%rsp),%ebx
  mov    %r13d,(%rax)
  mov    %r13d,%eax
  mov    %r13d,0xd0(%rsp)
  add    $0x1,%r13d
  mov    %r13d,0x34(%rsp)
  cmp    %ebx,%ebp
  je     L122
  mov    0x20(%rsp),%edx
  mov    0xc(%rsp),%edi
  mov    %ebp,%r14d
  add    %edx,%ebx
  add    %edx,%edi
  mov    %ebx,0x54(%rsp)
  mov    %edi,0x18(%rsp)
  cmp    %eax,%ebx
  jl     L15
  nopl   0x0(%rax)
L81:
  mov    0x38(%rsp),%rax
  mov    %r13d,(%rax)
  lea    0x1(%r13),%eax
  mov    %eax,0x50(%rsp)
  cmp    0xc(%rsp),%r14d
  je     L130
  mov    %eax,%r15d
  mov    0x10(%rsp),%eax
  add    0x20(%rsp),%eax
  mov    %eax,0x14(%rsp)
  mov    0xd8(%rsp),%eax
  add    $0x9,%eax
  mov    %eax,0x60(%rsp)
  cmp    %r13d,0x18(%rsp)
  jl     L112
  mov    %r13d,0x64(%rsp)
L293:
  mov    0x40(%rsp),%rax
  mov    %r15d,%ebx
  mov    %r15d,(%rax)
  add    $0x1,%r15d
  cmp    0x10(%rsp),%r14d
  je     L178
  mov    %r15d,%r13d
  cmp    %ebx,0x14(%rsp)
  jl     L366
  mov    %r14d,%eax
  mov    %ebx,%r14d
  mov    %eax,%ebx
  nop
L118:
  mov    0xa8(%rsp),%rax
  mov    %r13d,0xd4(%rsp)
  mov    %r13d,(%rax)
  mov    %r13d,%eax
  add    $0x1,%r13d
  cmp    0xb4(%rsp),%ebx
  je     L368
  mov    %r13d,%ebp
  cmp    %eax,0x1c(%rsp)
  jl     L94
  mov    %r13d,0xdc(%rsp)
  mov    %ebx,%r13d
  nopl   0x0(%rax,%rax,1)
L198:
  mov    0x48(%rsp),%rax
  mov    %ebp,%ebx
  mov    0x5c(%rsp),%r8d
  mov    %r13d,%ecx
  mov    0x60(%rsp),%esi
  mov    %r12,%rdi
  mov    %ebp,(%rax)
  add    $0x1,%ebp
  mov    %ebp,%edx
  call   <rec>
  cmp    %ebx,0x1c(%rsp)
  jge    L198
  mov    %r13d,%ebx
  mov    0xdc(%rsp),%r13d
L94:
  mov    0xd4(%rsp),%ecx
  cmp    %ecx,0x14(%rsp)
  jge    L118
  mov    %ebx,%eax
  mov    %r14d,%ebx
  mov    %eax,%r14d
L366:
  cmp    %ebx,0x18(%rsp)
  jge    L293
  mov    0x64(%rsp),%r13d
L112:
  cmp    %r13d,0x54(%rsp)
  jl     L297
L289:
  mov    0x50(%rsp),%r13d
  jmp    L81
L122:
  mov    %ebp,%esi
  mov    %r12,%rdi
  call   <imprima@plt>
L15:
  mov    0xd0(%rsp),%edi
  cmp    %edi,0xb8(%rsp)
  jge    L267
  mov    0x20(%rsp),%r14d
  mov    %r12,%r13
  mov    %ebp,%r15d
L0:
  mov    0x70(%rsp),%esi
  cmp    %esi,0xc0(%rsp)
  jge    L192
  mov    %r15d,%ebp
  mov    %r13,%r15
L238:
  mov    0xbc(%rsp),%ebx
  cmp    %ebx,0xc4(%rsp)
  jge    L322
  mov    %r15,%r12
  mov    %r14d,%r15d
L306:
  mov    0x74(%rsp),%edi
  cmp    %edi,0xc8(%rsp)
  jge    L41
L39:
  mov    %ebp,%eax
  mov    %r12,%rbp
  mov    %eax,%r12d
L356:
  mov    0x98(%rsp),%ebx
  cmp    %ebx,0xcc(%rsp)
  jge    L133
L249:
  add    $0xe8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L130:
  mov    %r14d,%esi
  mov    %r12,%rdi
  call   <imprima@plt>
  cmp    %r13d,0x54(%rsp)
  jge    L289
L297:
  mov    %r14d,%ebp
  jmp    L15
  cs nopw 0x0(%rax,%rax,1)
L368:
  mov    %ebx,%esi
  mov    %r12,%rdi
  call   <imprima@plt>
  jmp    L94
L234:
  mov    %r15d,%esi
  mov    %r13,%rdi
  call   <imprima@plt>
  jmp    L0
L10:
  mov    %ebp,%esi
  mov    %r15,%rdi
  call   <imprima@plt>
  jmp    L238
L178:
  mov    %r14d,%esi
  mov    %r12,%rdi
  call   <imprima@plt>
  jmp    L366
L295:
  mov    %r12,%rdi
  mov    %ebp,%esi
  call   <imprima@plt>
  mov    0x74(%rsp),%edi
  cmp    %edi,0xc8(%rsp)
  jge    L41
  jmp    L39
L226:
  mov    %ecx,%esi
  mov    %rbp,%rdi
  call   <imprima@plt>
  jmp    L356
L18:
  add    $0xe8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1050 <imprima@plt>
```

assistant: ```c
void rec(int s[], int j, int m, int k, int n) {
  if (j == k)
    imprima(s, k);
  else {
    if (m <= n - k + j + 1) {
      s[j + 1] = m;
      rec(s, j + 1, m + 1, k, n);
      rec(s, j, m + 1, k, n);
    }
  }
}
```