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

```asm
<narrowbandUnitCostDistanceSameLengthBestScoreLastRowColumnLowMemUsesPointers>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x58,%rsp
  mov    %rdi,0x10(%rsp)
  mov    %rsi,0x18(%rsp)
  mov    %edx,0x44(%rsp)
  mov    %r8d,0x40(%rsp)
  mov    %ecx,0x2c(%rsp)
  cmp    %ecx,%edx
  jne    L214
  mov    %r8d,%r14d
  mov    %edx,%ebx
  lea    0x1(%rdx),%edi
  movslq %edi,%rdi
  mov    $0x8,%esi
  call   <calloc@plt>
  mov    %rax,%r15
  mov    %ebx,%eax
  test   %ebx,%ebx
  js     L425
  mov    %r14d,%ebx
  neg    %ebx
  mov    %r14d,%r12d
  mov    %r15,%rbp
  sub    %r14d,%eax
  lea    0x1(%rax),%r13d
  mov    $0x0,%r14d
  mov    %r15,0x8(%rsp)
  mov    0x2c(%rsp),%r15d
  jmp    L186
L395:
  sub    %edx,%eax
  lea    0x1(%rsi,%rax,1),%edi
  add    %ecx,%edi
  movslq %edi,%rdi
  mov    $0x4,%esi
  call   <calloc@plt>
  mov    %rax,0x0(%rbp)
  add    $0x1,%ebx
  add    $0x1,%r12d
  add    $0x8,%rbp
  cmp    %r13d,%ebx
  je     L231
L186:
  mov    %r12d,%eax
  test   %ebx,%ebx
  setg   %sil
  movzbl %sil,%esi
  mov    $0x0,%edx
  cmovns %ebx,%edx
  mov    $0x1,%ecx
  cmp    %r12d,%r15d
  jg     L395
  mov    %r15d,%eax
  mov    %r14d,%ecx
  jmp    L395
L231:
  mov    0x8(%rsp),%r15
L425:
  cmpl   $0x0,0x40(%rsp)
  js     L93
  mov    0x40(%rsp),%ebx
  cmp    %ebx,0x2c(%rsp)
  jle    L194
  mov    0x40(%rsp),%eax
  lea    0x1(%rax),%ecx
  mov    (%r15),%rdx
  mov    %rdx,%rsi
  mov    $0x1,%edi
  mov    $0x0,%r11d
  mov    $0x0,%eax
  jmp    L145
L18:
  mov    $0x1,%r11d
  jmp    L408
L33:
  cmp    %r14d,0x2c(%rsp)
  jle    L226
  add    $0x1,%eax
  mov    %eax,0x20(%rsp)
  mov    0x30(%rsp),%rax
  mov    (%rax,%r13,8),%rsi
  movslq %ebp,%rbp
  mov    -0x8(%rax,%r13,8),%rax
  lea    (%rax,%rbp,4),%r9
  movl   $0x1,0x28(%rsp)
  mov    $0x0,%ebp
  mov    $0x0,%edi
  jmp    L127
L134:
  mov    %eax,(%rcx)
  add    $0x4,%rcx
  add    $0x4,%r10
  add    $0x4,%rsi
  add    $0x4,%r9
  add    $0x1,%edx
  cmp    %r11d,%edx
  je     L135
L10:
  mov    %ebx,%eax
  test   %edx,%edx
  je     L134
  mov    (%r10),%eax
  add    $0x1,%eax
  mov    (%rsi),%edi
  lea    0x1(%rdi),%r8d
  mov    0x8(%rsp),%edi
  add    %edx,%edi
  movslq %edi,%rdi
  mov    0x18(%rsp),%r12
  mov    0x10(%rsp),%rbp
  movzbl -0x1(%rbp,%r13,1),%ebp
  cmp    %bpl,-0x1(%r12,%rdi,1)
  setne  %dil
  movzbl %dil,%edi
  add    (%r9),%edi
  cmp    %edi,%eax
  mov    %edi,%r12d
  cmovle %eax,%r12d
  cmp    %r8d,%eax
  cmovg  %r8d,%eax
  cmp    %edi,%r8d
  cmovge %r12d,%eax
  jmp    L134
L135:
  mov    0x38(%rsp),%ebp
  mov    0x20(%rsp),%eax
  lea    -0x1(%rax),%eax
  lea    0x4(%r15,%rax,4),%r15
L302:
  cmpl   $0x0,0x28(%rsp)
  je     L17
  movl   $0x3e8,(%r15)
L17:
  add    $0x1,%r13
  addl   $0x1,0x24(%rsp)
  add    $0x1,%r14d
  cmp    0x3c(%rsp),%r14d
  je     L322
L312:
  mov    %r13d,%ebx
  mov    0x24(%rsp),%ecx
  mov    %ecx,%edi
  mov    %r14d,%eax
  test   %ecx,%ecx
  jle    L33
  cmp    %r14d,0x2c(%rsp)
  jg     L245
  mov    0x48(%rsp),%eax
  sub    %r14d,%eax
  mov    %eax,0x20(%rsp)
  mov    0x30(%rsp),%rax
  mov    (%rax,%r13,8),%rsi
  movslq %ebp,%rbp
  mov    -0x8(%rax,%r13,8),%rax
  lea    (%rax,%rbp,4),%r9
  movl   $0x0,0x28(%rsp)
L257:
  movl   $0x3e8,(%rsi)
  mov    $0x1,%ebp
L127:
  movslq %ebp,%rax
  shl    $0x2,%rax
  lea    (%rsi,%rax,1),%r15
  lea    (%r9,%rax,1),%r10
  sub    $0x4,%rax
  add    %rax,%rsi
  add    %rax,%r9
  mov    0x20(%rsp),%eax
  lea    0x0(%rbp,%rax,1),%r11d
  cmp    %ebp,%r11d
  jle    L302
  mov    %r15,%rcx
  mov    %ebp,%edx
  sub    %ebp,%edi
  mov    %edi,0x8(%rsp)
  mov    %ebp,0x38(%rsp)
  jmp    L10
L322:
  mov    0x30(%rsp),%r15
L55:
  mov    0x44(%rsp),%eax
  mov    %eax,%edx
  mov    0x40(%rsp),%ebx
  sub    %ebx,%edx
  add    %ebx,%eax
  mov    %eax,%r8d
  mov    $0x1,%eax
  test   %edx,%edx
  jle    L277
L172:
  mov    $0x1,%esi
  cmp    %r8d,0x2c(%rsp)
  jg     L407
  mov    0x2c(%rsp),%r8d
  mov    $0x0,%esi
L407:
  mov    %r8d,%r9d
  sub    %edx,%r9d
  add    $0x1,%r9d
  movslq 0x44(%rsp),%rdx
  mov    (%r15,%rdx,8),%rdi
  mov    (%rdi),%ebx
  lea    0x4(%rdi),%rdx
  lea    (%rax,%r9,1),%ecx
  add    %esi,%ecx
  cmp    $0x1,%ecx
  jle    L60
  mov    %ecx,%ecx
  lea    (%rdi,%rcx,4),%rdi
L335:
  mov    (%rdx),%ecx
  cmp    %ecx,%ebx
  cmovg  %ecx,%ebx
  add    $0x4,%rdx
  cmp    %rdx,%rdi
  jne    L335
L60:
  mov    0x44(%rsp),%ecx
  test   %ecx,%ecx
  js     L98
  mov    0x2c(%rsp),%r10d
  cmp    %r10d,%r8d
  jne    L98
  lea    -0x1(%rcx),%edx
  movslq %edx,%rcx
  mov    0x40(%rsp),%r14d
  lea    (%rdx,%r14,1),%edi
  sub    %r14d,%edx
  mov    $0x0,%r8d
  jmp    L308
L277:
  mov    $0x0,%eax
  mov    $0x0,%edx
  jmp    L172
L98:
  cmpl   $0x0,0x44(%rsp)
  js     L100
  jmp    L419
L214:
  mov    $0xffffffff,%ebx
  jmp    L401
L64:
  mov    0x2c(%rsp),%eax
  mov    0x40(%rsp),%ebx
  lea    0x1(%rax,%rbx,1),%ecx
  mov    (%r15),%rdx
  mov    $0x0,%edi
  jmp    L353
L93:
  mov    0x40(%rsp),%ebx
  cmp    %ebx,0x2c(%rsp)
  jle    L64
  mov    0x40(%rsp),%eax
  lea    0x1(%rax,%rax,1),%ecx
  mov    (%r15),%rdx
  mov    $0x1,%edi
L353:
  movl   $0x3e8,(%rdx)
  add    $0x4,%rdx
  add    $0x1,%ecx
  cmp    $0x1,%ecx
  jle    L18
  mov    $0x1,%eax
L321:
  mov    %eax,%r11d
  mov    %rdx,%rsi
L145:
  mov    %eax,(%rdx)
  add    $0x4,%rdx
  add    $0x1,%eax
  cmp    %ecx,%eax
  jne    L145
  sub    %r11d,%ecx
  lea    -0x1(%rcx),%eax
  lea    0x4(%rsi,%rax,4),%rdx
L408:
  test   %edi,%edi
  je     L292
  movl   $0x3e8,(%rdx)
L292:
  mov    0x44(%rsp),%ebx
  test   %ebx,%ebx
  jle    L55
  mov    $0x1,%eax
  mov    %eax,%esi
  mov    0x40(%rsp),%eax
  sub    %eax,%esi
  mov    %esi,0x24(%rsp)
  lea    0x1(%rax),%r14d
  add    %r14d,%ebx
  mov    %ebx,0x3c(%rsp)
  mov    $0x1,%r13d
  mov    0x2c(%rsp),%ebx
  lea    0x1(%rbx,%rax,2),%eax
  mov    %eax,0x48(%rsp)
  lea    0x1(%rbx),%eax
  mov    %eax,0x4c(%rsp)
  mov    %r15,0x30(%rsp)
  mov    %r11d,%ebp
  jmp    L312
L260:
  mov    %r10d,%r9d
  sub    %esi,%r9d
  add    $0x1,%r9d
  sub    $0x1,%rcx
  sub    $0x1,%edi
  sub    $0x1,%edx
  mov    %r8d,%esi
L308:
  cltq
  movslq %r9d,%r9
  movslq %esi,%rsi
  add    %r9,%rax
  add    %rsi,%rax
  mov    0x8(%r15,%rcx,8),%rsi
  mov    -0x4(%rsi,%rax,4),%eax
  cmp    %eax,%ebx
  cmovg  %eax,%ebx
  test   %ecx,%ecx
  js     L419
  test   %edx,%edx
  setg   %al
  movzbl %al,%eax
  mov    $0x0,%esi
  cmovns %edx,%esi
  cmp    %edi,%r10d
  jle    L260
L419:
  mov    $0x0,%ebp
  mov    0x44(%rsp),%r12d
L304:
  mov    (%r15,%rbp,8),%rdi
  call   <free@plt>
  add    $0x1,%rbp
  cmp    %ebp,%r12d
  jge    L304
L100:
  mov    %r15,%rdi
  call   <free@plt>
L401:
  mov    %ebx,%eax
  add    $0x58,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L226:
  mov    0x4c(%rsp),%eax
  mov    %eax,0x20(%rsp)
  mov    0x30(%rsp),%rax
  mov    (%rax,%r13,8),%rsi
  movslq %ebp,%rbp
  mov    -0x8(%rax,%r13,8),%rax
  lea    (%rax,%rbp,4),%r9
  movl   $0x0,0x28(%rsp)
  mov    $0x0,%ebp
  mov    $0x0,%edi
  jmp    L127
L245:
  sub    %ecx,%eax
  add    $0x1,%eax
  mov    %eax,0x20(%rsp)
  mov    0x30(%rsp),%rax
  mov    (%rax,%r13,8),%rsi
  movslq %ebp,%rbp
  mov    -0x8(%rax,%r13,8),%rax
  lea    (%rax,%rbp,4),%r9
  movl   $0x1,0x28(%rsp)
  jmp    L257
L194:
  mov    0x2c(%rsp),%eax
  lea    0x1(%rax),%ecx
  mov    (%r15),%rdx
  mov    $0x0,%edi
  mov    $0x0,%eax
  mov    $0x0,%r11d
  test   %ecx,%ecx
  jg     L321
  jmp    L292
```

assistant: ```c
int narrowbandUnitCostDistanceSameLengthBestScoreLastRowColumnLowMemUsesPointers(char *seq1, char *seq2, int len1, int len2, int maxerr) {
  int **S;
  int score;
  int row, col;
  int match;
  int left, up, diagonal;
  int from, to;
  int rowlength;
  int leftboundary, rightboundary;
  int previousleftboundary;
  int *Sp, *Spu, *Spl, *Spd;
  if (len1 != len2) {
    return (-1);
  }
  S = (int **)calloc((len1 + 1), sizeof(int *));
  for (row = 0; row <= len1; row++) {
    from = row - maxerr;
    to = row + maxerr;
    leftboundary = 0;
    if (from <= 0)
      from = 0;
    else
      leftboundary = 1;
    rightboundary = 0;
    if (to >= len2)
      to = len2;
    else
      rightboundary = 1;
    rowlength = to - from + 1;
    S[row] = (int *)calloc(leftboundary + rowlength + rightboundary, sizeof(int));
  }
  row = 0;
  from = row - maxerr;
  to = row + maxerr;
  leftboundary = 0;
  if (from <= 0)
    from = 0;
  else
    leftboundary = 1;
  rightboundary = 0;
  if (to >= len2)
    to = len2;
  else
    rightboundary = 1;
  rowlength = to - from + 1;
  Sp = S[row];
  if (leftboundary) {
    (*Sp) = 1000;
  }
  Sp += leftboundary;
  for (col = leftboundary; col <= leftboundary + rowlength - 1; col++) {
    (*Sp) = col;
    Sp++;
  }
  if (rightboundary) {
    (*Sp) = 1000;
  }
  previousleftboundary = leftboundary;
  for (row = 1; row <= len1; row++) {
    from = row - maxerr;
    to = row + maxerr;
    leftboundary = 0;
    if (from <= 0)
      from = 0;
    else
      leftboundary = 1;
    rightboundary = 0;
    if (to >= len2)
      to = len2;
    else
      rightboundary = 1;
    rowlength = to - from + 1;
    Sp = S[row];
    Spu = S[row - 1] + previousleftboundary;
    Spl = Sp - 1;
    Spd = Spu - 1;
    if (leftboundary) {
      (*Sp) = 1000;
    }
    Sp += leftboundary;
    Spu += leftboundary;
    Spl += leftboundary;
    Spd += leftboundary;
    for (col = leftboundary; col <= leftboundary + rowlength - 1; col++) {
      if (col == 0)
        (*Sp) = row;
      else {
        match = (seq1[row - 1] == seq2[from + col - leftboundary - 1]) ? 0 : 1;
        up = (*Spu) + 1;
        left = (*Spl) + 1;
        diagonal = (*Spd) + match;
        (*Sp) = ((diagonal <= left) ? ((diagonal <= up) ? diagonal : up) : ((left <= up) ? left : up));
      }
      Sp++;
      Spu++;
      Spl++;
      Spd++;
    }
    if (rightboundary) {
      (*Sp) = 1000;
    }
    previousleftboundary = leftboundary;
  }
  row = len1;
  from = row - maxerr;
  to = row + maxerr;
  leftboundary = 0;
  if (from <= 0)
    from = 0;
  else
    leftboundary = 1;
  rightboundary = 0;
  if (to >= len2)
    to = len2;
  else
    rightboundary = 1;
  rowlength = to - from + 1;
  Sp = S[row];
  score = (*Sp);
  Sp++;
  for (col = 1; col <= leftboundary + rowlength + rightboundary - 1; col++) {
    if ((*Sp) < score) {
      score = (*Sp);
    }
    Sp++;
  }
  row = len1;
  from = row - maxerr;
  to = row + maxerr;
  leftboundary = 0;
  if (from <= 0)
    from = 0;
  else
    leftboundary = 1;
  rightboundary = 0;
  if (to >= len2)
    to = len2;
  else
    rightboundary = 1;
  rowlength = to - from + 1;
  while ((row >= 0) && (to == len2)) {
    Sp = S[row] + leftboundary + rowlength + rightboundary - 1;
    if ((*Sp) < score) {
      score = (*Sp);
    }
    row--;
    if (row >= 0) {
      from = row - maxerr;
      to = row + maxerr;
      leftboundary = 0;
      if (from <= 0)
        from = 0;
      else
        leftboundary = 1;
      rightboundary = 0;
      if (to >= len2)
        to = len2;
      else
        rightboundary = 1;
      rowlength = to - from + 1;
    }
  }
  for (row = 0; row <= len1; row++) {
    free(S[row]);
  }
  free(S);
  return (score);
}
```