const long long MAX_MEM = 2e8;
long long mpos = 0;
char mem[MAX_MEM];
void * operator new ( size_t n ) {
  char *res = mem + mpos;
  mpos += n;
  assert(mpos <= MAX_MEM);
  return (void *)res;
}
void operator delete ( void * ) noexcept { }

void * operator new [] ( size_t n) {
  char *res = mem + mpos;
  mpos += n;
  assert(mpos <= MAX_MEM);
  return (void *)res;
}
void operator delete [] ( void * ) noexcept {}