Merge pull request #1775 from ouuan/fix-fast-io

    return getchar();

#endif

    if (p1 == p2) p2 = (p1 = buf) + fread(buf, 1, MAXSIZE, stdin);

    return p1 == p2 ? -1 : *p1++;

    return p1 == p2 ? ' ' : *p1++;

  }

  inline bool blank(char ch) {

    return ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t';