user: Please show me the C implementation that matches the assembly code listed below:

```asm
<stockmaximize>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    -0x34(%rbp),%rax
  mov    %rax,%rsi
  lea    D18(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  jmp    L62
L18:
  lea    -0x30(%rbp),%rax
  mov    %rax,%rsi
  lea    D18(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  mov    -0x30(%rbp),%eax
  cltq
  shl    $0x2,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x30(%rbp),%eax
  cltq
  shl    $0x2,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x10(%rbp)
  movl   $0x0,-0x2c(%rbp)
  movl   $0x0,-0x28(%rbp)
  movl   $0x0,-0x24(%rbp)
  jmp    L103
L84:
  mov    -0x24(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,%rsi
  lea    D18(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  mov    -0x24(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rax,%rdx
  mov    -0x24(%rbp),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x24(%rbp)
L103:
  mov    -0x30(%rbp),%eax
  cmp    %eax,-0x24(%rbp)
  jl     L84
  mov    -0x30(%rbp),%edx
  mov    -0x10(%rbp),%rcx
  mov    -0x18(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <quicksort_index_descending@plt>
  movl   $0x0,-0x20(%rbp)
  jmp    L32
L51:
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cmp    %eax,-0x28(%rbp)
  jg     L65
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x10(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  sub    -0x28(%rbp),%eax
  imul   %edx,%eax
  add    %eax,-0x2c(%rbp)
  mov    -0x28(%rbp),%eax
  mov    %eax,-0x1c(%rbp)
  jmp    L96
L44:
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  sub    %eax,-0x2c(%rbp)
  addl   $0x1,-0x1c(%rbp)
L96:
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cmp    %eax,-0x1c(%rbp)
  jl     L44
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  add    $0x1,%eax
  mov    %eax,-0x28(%rbp)
L65:
  addl   $0x1,-0x20(%rbp)
L32:
  mov    -0x30(%rbp),%eax
  cmp    %eax,-0x20(%rbp)
  jge    L82
  mov    -0x30(%rbp),%eax
  cmp    %eax,-0x28(%rbp)
  jl     L51
L82:
  mov    -0x2c(%rbp),%eax
  mov    %eax,%esi
  lea    D23(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
L62:
  mov    -0x34(%rbp),%eax
  lea    -0x1(%rax),%edx
  mov    %edx,-0x34(%rbp)
  test   %eax,%eax
  jne    L18
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L60
  call   <__stack_chk_fail@plt>
L60:
  leave
  ret
```

tool_calls: name: retrieve_data
arguments: data_label: D18
datatype: string
name: retrieve_data
arguments: data_label: D23
datatype: string

tool: D18: %d

tool: D23: %u


assistant: ```c
int stockmaximize(void) {
  int numTestCases;
  scanf("%d", &numTestCases);
  while (numTestCases--) {
    int numDays;
    scanf("%d", &numDays);
    int *prices = malloc(sizeof(int) * numDays);
    int *sortedPriceIndexes = malloc(sizeof(int) * numDays);
    uint bestPrice = 0;
    int lastIndex = 0;
    for (int i = 0; i < numDays; i++) {
      scanf("%d", prices + i);
      sortedPriceIndexes[i] = i;
    }
    quicksort_index_descending(prices, sortedPriceIndexes, numDays);
    for (int i = 0; i < numDays && lastIndex < numDays; i++) {
      if (sortedPriceIndexes[i] >= lastIndex) {
        bestPrice += prices[sortedPriceIndexes[i]] * (sortedPriceIndexes[i] - lastIndex);
        for (int j = lastIndex; j < sortedPriceIndexes[i]; j++) {
          bestPrice -= prices[j];
        }
        lastIndex = sortedPriceIndexes[i] + 1;
      }
    }
    printf("%u\n", bestPrice);
    free(prices);
    free(sortedPriceIndexes);
  }
  return 0;
}
```