user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %r14
  push   %rbx
  sub    $0x8,%rsp
  mov    $0x0,%eax
  call   <omp_get_wtime@plt>
  movq   %xmm0,%r14
  mov    $0x0,%eax
  call   <omp_get_thread_num@plt>
  mov    %eax,%ebx
  test   %eax,%eax
  je     L47
L55:
  mov    $0x1f4,%edx
L25:
  mov    $0x1f4,%eax
L108:
  sub    $0x1,%eax
  jne    L108
  sub    $0x1,%edx
  jne    L25
  mov    $0x1f4,%edx
L11:
  mov    $0x1f4,%eax
L124:
  sub    $0x1,%eax
  jne    L124
  sub    $0x1,%edx
  jne    L11
  mov    $0x1f4,%edx
L102:
  mov    $0x1f4,%eax
L136:
  sub    $0x1,%eax
  jne    L136
  sub    $0x1,%edx
  jne    L102
  mov    %ebx,%esi
  lea    D13(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1f4,%ecx
  jmp    L121
L47:
  mov    $0x0,%eax
  call   <omp_get_num_threads@plt>
  mov    %eax,%esi
  lea    D23(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D9(%rip),%rdi
  call   <puts@plt>
  jmp    L55
L67:
  sub    $0x1,%edx
  je     L90
L139:
  mov    $0x1f4,%eax
L82:
  sub    $0x1,%eax
  jne    L82
  jmp    L67
L90:
  sub    $0x1,%ecx
  je     L14
L121:
  mov    $0x1f4,%edx
  jmp    L139
L14:
  mov    $0x0,%eax
  call   <omp_get_wtime@plt>
  movq   %r14,%xmm1
  subsd  %xmm1,%xmm0
  lea    D0(%rip),%rdi
  mov    $0x1,%eax
  call   <printf@plt>
  mov    $0x0,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %r14
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D13
data_type: string
name: extract_symbolic_data
arguments: data_label: D23
data_type: string
name: extract_symbolic_data
arguments: data_label: D9
data_type: string
name: extract_symbolic_data
arguments: data_label: D0
data_type: string

tool: D13: Thread %d starting matrix multiply...


tool: D23: Starting matrix multiple example with %d threads


tool: D9: Initializing matrices...

tool: D0: Global Elapsed time: %2f s


assistant: ```c
int main(int argc, char *argv[]) {
  int tid, nthreads, i, j, k, chunk;
  double elapsed_time = 0.0;
  double a[500][500], b[500][500], c[500][500];
  chunk = 10;
  elapsed_time = -omp_get_wtime();
#pragma omp parallel shared(a, b, c, nthreads, chunk) private(tid, i, j, k)
  {
    tid = omp_get_thread_num();
    if (tid == 0) {
      nthreads = omp_get_num_threads();
      printf("Starting matrix multiple example with %d threads\n", nthreads);
      printf("Initializing matrices...\n");
    }
#pragma omp for schedule(static, chunk)
    for (i = 0; i < 500; i++)
      for (j = 0; j < 500; j++)
        a[i][j] = i + j;
#pragma omp for schedule(static, chunk)
    for (i = 0; i < 500; i++)
      for (j = 0; j < 500; j++)
        b[i][j] = i * j;
#pragma omp for schedule(static, chunk)
    for (i = 0; i < 500; i++)
      for (j = 0; j < 500; j++)
        c[i][j] = 0;
    printf("Thread %d starting matrix multiply...\n", tid);
#pragma omp for schedule(static, chunk)
    for (i = 0; i < 500; i++) {
      if (500 <= 100)
        printf("Thread=%d did row=%d\n", tid, i);
      for (j = 0; j < 500; j++)
        for (k = 0; k < 500; k++)
          c[i][j] += a[i][k] * b[k][j];
    }
  }
  elapsed_time += omp_get_wtime();
  if (500 <= 100) {
    printf("******************************************************\n");
    printf("Result Matrix:\n");
    for (i = 0; i < 500; i++) {
      for (j = 0; j < 500; j++)
        printf("%6.2f   ", c[i][j]);
      printf("\n");
    }
    printf("******************************************************\n");
  }
  printf("Global Elapsed time: %2f s\n", elapsed_time);
  return 0;
}
```