user: 请从给定的汇编指令推导出C源代码：

```asm
<mergeAndCount>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %edx,-0x44(%rbp)
  mov    %ecx,-0x48(%rbp)
  mov    %r8d,-0x4c(%rbp)
  mov    %r9d,-0x50(%rbp)
  mov    -0x48(%rbp),%eax
  sub    -0x44(%rbp),%eax
  cmp    $0x1,%eax
  jg     L35
  mov    $0x0,%eax
  jmp    L42
L35:
  mov    -0x48(%rbp),%eax
  sub    -0x44(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x44(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x50(%rbp),%r8d
  mov    -0x4c(%rbp),%edi
  mov    -0x14(%rbp),%ecx
  mov    -0x44(%rbp),%edx
  mov    -0x40(%rbp),%rsi
  mov    -0x38(%rbp),%rax
  mov    %r8d,%r9d
  mov    %edi,%r8d
  mov    %rax,%rdi
  call   <mergeAndCount>
  mov    %eax,%ebx
  mov    -0x50(%rbp),%r8d
  mov    -0x4c(%rbp),%edi
  mov    -0x48(%rbp),%ecx
  mov    -0x14(%rbp),%edx
  mov    -0x40(%rbp),%rsi
  mov    -0x38(%rbp),%rax
  mov    %r8d,%r9d
  mov    %edi,%r8d
  mov    %rax,%rdi
  call   <mergeAndCount>
  add    %ebx,%eax
  mov    %eax,-0x2c(%rbp)
  mov    -0x14(%rbp),%eax
  mov    %eax,-0x28(%rbp)
  mov    -0x14(%rbp),%eax
  mov    %eax,-0x24(%rbp)
  mov    -0x14(%rbp),%eax
  mov    %eax,-0x20(%rbp)
  mov    -0x44(%rbp),%eax
  mov    %eax,-0x1c(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L103
L43:
  addl   $0x1,-0x28(%rbp)
L85:
  mov    -0x28(%rbp),%eax
  cmp    -0x48(%rbp),%eax
  jge    L52
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    -0x1c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x38(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%rcx
  sub    %rcx,%rax
  mov    %rax,%rdx
  mov    -0x4c(%rbp),%eax
  cltq
  cmp    %rax,%rdx
  jl     L43
  jmp    L52
L74:
  addl   $0x1,-0x24(%rbp)
L52:
  mov    -0x24(%rbp),%eax
  cmp    -0x48(%rbp),%eax
  jge    L109
  mov    -0x24(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    -0x1c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x38(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%rcx
  sub    %rcx,%rax
  mov    %rax,%rdx
  mov    -0x50(%rbp),%eax
  cltq
  cmp    %rax,%rdx
  jle    L74
  jmp    L109
L29:
  mov    -0x20(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x20(%rbp)
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x18(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x18(%rbp)
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    (%rcx),%rax
  mov    %rax,(%rdx)
L109:
  mov    -0x20(%rbp),%eax
  cmp    -0x48(%rbp),%eax
  jge    L20
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rdx
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x38(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  jl     L29
L20:
  mov    -0x24(%rbp),%eax
  sub    -0x28(%rbp),%eax
  add    %eax,-0x2c(%rbp)
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  mov    -0x18(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x40(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%rax
  mov    %rax,(%rdx)
  addl   $0x1,-0x1c(%rbp)
  addl   $0x1,-0x18(%rbp)
L103:
  mov    -0x1c(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  jl     L85
  mov    -0x20(%rbp),%eax
  sub    -0x44(%rbp),%eax
  cltq
  shl    $0x3,%eax
  mov    %eax,%edx
  mov    -0x44(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x38(%rbp),%rax
  add    %rax,%rcx
  mov    -0x40(%rbp),%rax
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <memcpy@plt>
  mov    -0x2c(%rbp),%eax
L42:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
int mergeAndCount(long *sums, long *buff, int start, int end, int lower, int upper) {
  if (end - start <= 1)
    return 0;
  int mid = start + (end - start) / 2;
  int cnt = mergeAndCount(sums, buff, start, mid, lower, upper) + mergeAndCount(sums, buff, mid, end, lower, upper);
  int lowerIdx = mid, upperIdx = mid, tempIdx = mid;
  for (int i = start, bi = 0; i < mid; i++, bi++) {
    while (lowerIdx < end && sums[lowerIdx] - sums[i] < lower)
      lowerIdx++;
    while (upperIdx < end && sums[upperIdx] - sums[i] <= upper)
      upperIdx++;
    while (tempIdx < end && sums[tempIdx] < sums[i])
      buff[bi++] = sums[tempIdx++];
    cnt += upperIdx - lowerIdx;
    buff[bi] = sums[i];
  }
  memcpy(sums + start, buff, (tempIdx - start) * sizeof(long));
  return cnt;
}
```