RT

char pbuf[1 << 20], *pp = pbuf;

void pt(const char &c) {
  if (pp - pbuf == 1 << 20) fwrite(pbuf, 1, 1 << 20, stdout), pp = pbuf;
  *pp++ = c;
}
void write(long x) {
  static int sta[35];
  int top = 0;
  do {
    sta[top++] = x % 10, x /= 10;
  } while (x);
  while (top) pt(sta[--top] + '0');
  pt('\n');
}

用这个快写显示没有输出