int __fastcall sub_401930(int a1)
{
  int v1; // r0
  int v2; // r0

  v1 = *(_DWORD *)(a1 + 16);
  if ( (unsigned int)(v1 - 1) > 0x3F )
    return 259;
  v2 = 257 * v1;
  if ( *((_BYTE *)off_401CE0 + v2) == 0 )
    return 259;
  if ( *((_BYTE *)off_401CE0 + v2) == 1 )
    sub_4010E0(a1: (char *)off_401CE0 + v2, a2: 257);
  return 0;
}