阿兹卡班的小天狼星的博客
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请问信息与未来要加文件操作吗
2024-05-11 19:41:52 By 阿兹卡班的小天狼星
寻人启事
2023-11-28 22:17:06 By 阿兹卡班的小天狼星
CSP-J/S第二轮出征诗一首
2023-10-20 19:40:48 By 阿兹卡班的小天狼星
少年AK说
[现代]王昊宸
故今日之OI，不在他人，而全在我少年。少年CE则国CE,少年WA则国WA,少年MLE则国MLE,少年TLE则国TLE,少年OLE则国OLE,少年PE则国PE,少年AC则国AC,少年AU则国AU,少年AK则国AK。
OI初升，其道大WA。OI初试，一下AC。TL腾渊，优化飞扬。暴搜剪枝，TL震惶。DP状压，AC吸张。图论初胎，最短路径。数论发硎，AC其芒。上至meet in the middle，下至分块。纵有扩欧，横有并查集。AU似海，AK方长。
AU，我少年AK，省一必须；AK，我AK少年，与A无疆！！！
祝大家AKCSP-J/S第二轮
为什么最近没有人发博客了？？？
2023-10-07 20:15:05 By 阿兹卡班的小天狼星
论学生如何出比赛？
2023-10-07 20:14:36 By 阿兹卡班的小天狼星
送给你小行星
2023-10-04 12:42:32 By 阿兹卡班的小天狼星
火星：送给你小行星
地球：你真TM的是个【数据删除】
新博客
2023-09-29 15:04:14 By 阿兹卡班的小天狼星
国庆节好多课
CSP-J/S 分数征询
2023-09-16 22:20:15 By 阿兹卡班的小天狼星
大家把估的分数留言在评论区！！！
并预估能不能进复赛。
如：
王昊宸 CSP-J，81 CSP-S 57
CSP-J/S第一轮出征诗二首
2023-09-15 20:28:42 By 阿兹卡班的小天狼星
CSP-J/S出征诗二首
-----------------
AC吟
千A万C出深山，
WATLE若等闲。
比赛爆零浑不怕
要留AC在人间
----------------
将考试
君不见，多年奋斗回忆来，辛苦到海不复回。
君不见，机房刷题悲WA，朝如TLE暮成WA。
编程AC须尽欢，莫使心血空对题。
天生我才必AK，AC不见还复来
WA RE且为乐，会须一做三百题。
崔真言、肖泽成，将考试，AC莫停。
与君WA一曲，请题为我AC听。
ML CE不足贵，但愿AK不复WA。
古来IOER皆寂寞，惟有AK留其名。
老师昔时多刷题，AC十万姿欢谑。
主人何为TLE，只需思考即AC。
CSP、NOI，AC晋级得省一，于尔同销万古愁！！！
---------------
祝大家AK CSP-J/S！！！
--------五（17）A 王昊宸
#15题解
2023-07-16 12:43:17 By 阿兹卡班的小天狼星
这题简直是史诗级难题
AC代码如下：
#ifndef _GLIBCXX_IOSTREAM
#define _GLIBCXX_IOSTREAM 1
#pragma GCC system_header
#include <bits/c++config.h>
#ifndef _GLIBCXX_OSTREAM
#define _GLIBCXX_OSTREAM 1
#pragma GCC system_header
#include <ios>
#include <bits/ostream_insert.h>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _CharT, typename _Traits>
class basic_ostream : virtual public basic_ios<_CharT, _Traits>
{
public:
// Types (inherited from basic_ios):
typedef _CharT char_type;
typedef typename _Traits::int_type int_type;
typedef typename _Traits::pos_type pos_type;
typedef typename _Traits::off_type off_type;
typedef _Traits traits_type;
typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
typedef basic_ios<_CharT, _Traits> __ios_type;
typedef basic_ostream<_CharT, _Traits> __ostream_type;
typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> >
__num_put_type;
typedef ctype<_CharT> __ctype_type;
explicit
basic_ostream(__streambuf_type* __sb)
{ this->init(__sb); }
virtual
~basic_ostream() { }
/// Safe prefix/suffix operations.
class sentry;
friend class sentry;
__ostream_type&
operator<<(__ostream_type& (*__pf)(__ostream_type&))
{
return __pf(*this);
}
__ostream_type&
operator<<(__ios_type& (*__pf)(__ios_type&))
{
__pf(*this);
return *this;
}
__ostream_type&
operator<<(ios_base& (*__pf) (ios_base&))
{
__pf(*this);
return *this;
}
__ostream_type&
operator<<(long __n)
{ return _M_insert(__n); }
__ostream_type&
operator<<(unsigned long __n)
{ return _M_insert(__n); }
__ostream_type&
operator<<(bool __n)
{ return _M_insert(__n); }
__ostream_type&
operator<<(short __n);
__ostream_type&
operator<<(unsigned short __n)
{
return _M_insert(static_cast<unsigned long>(__n));
}
__ostream_type&
operator<<(int __n);
__ostream_type&
operator<<(unsigned int __n)
{
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 117. basic_ostream uses nonexistent num_put member functions.
return _M_insert(static_cast<unsigned long>(__n));
}
#ifdef _GLIBCXX_USE_LONG_LONG
__ostream_type&
operator<<(long long __n)
{ return _M_insert(__n); }
__ostream_type&
operator<<(unsigned long long __n)
{ return _M_insert(__n); }
#endif
__ostream_type&
operator<<(double __f)
{ return _M_insert(__f); }
__ostream_type&
operator<<(float __f)
{
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 117. basic_ostream uses nonexistent num_put member functions.
return _M_insert(static_cast<double>(__f));
}
__ostream_type&
operator<<(long double __f)
{ return _M_insert(__f); }
//@}
__ostream_type&
operator<<(const void* __p)
{ return _M_insert(__p); }
__ostream_type&
operator<<(__streambuf_type* __sb);
//@}
//@{
__ostream_type&
put(char_type __c);
void
_M_write(const char_type* __s, streamsize __n)
{
const streamsize __put = this->rdbuf()->sputn(__s, __n);
if (__put != __n)
this->setstate(ios_base::badbit);
}
__ostream_type&
write(const char_type* __s, streamsize __n);
//@}
__ostream_type&
flush();
pos_type
tellp();
__ostream_type&
seekp(pos_type);
__ostream_type&
seekp(off_type, ios_base::seekdir);
protected:
basic_ostream()
{ this->init(0); }
template<typename _ValueT>
__ostream_type&
_M_insert(_ValueT __v);
};
template <typename _CharT, typename _Traits>
class basic_ostream<_CharT, _Traits>::sentry
{
// Data Members.
bool _M_ok;
basic_ostream<_CharT, _Traits>& _M_os;
public:
explicit
sentry(basic_ostream<_CharT, _Traits>& __os);
~sentry()
{
// XXX MT
if (bool(_M_os.flags() & ios_base::unitbuf) && !uncaught_exception())
{
// Can't call flush directly or else will get into recursive lock.
if (_M_os.rdbuf() && _M_os.rdbuf()->pubsync() == -1)
_M_os.setstate(ios_base::badbit);
}
}
#if __cplusplus >= 201103L
explicit
#endif
operator bool() const
{ return _M_ok; }
};
template<typename _CharT, typename _Traits>
inline basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
{ return __ostream_insert(__out, &__c, 1); }
template<typename _CharT, typename _Traits>
inline basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
{ return (__out << __out.widen(__c)); }
template <class _Traits>
inline basic_ostream<char, _Traits>&
operator<<(basic_ostream<char, _Traits>& __out, char __c)
{ return __ostream_insert(__out, &__c, 1); }
template<class _Traits>
inline basic_ostream<char, _Traits>&
operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
{ return (__out << static_cast<char>(__c)); }
template<class _Traits>
inline basic_ostream<char, _Traits>&
operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
{ return (__out << static_cast<char>(__c)); }
//@}
template<typename _CharT, typename _Traits>
inline basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
{
if (!__s)
__out.setstate(ios_base::badbit);
else
__ostream_insert(__out, __s,
static_cast<streamsize>(_Traits::length(__s)));
return __out;
}
template<typename _CharT, typename _Traits>
basic_ostream<_CharT, _Traits> &
operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s);
// Partial specializations
template<class _Traits>
inline basic_ostream<char, _Traits>&
operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
{
if (!__s)
__out.setstate(ios_base::badbit);
else
__ostream_insert(__out, __s,
static_cast<streamsize>(_Traits::length(__s)));
return __out;
}
// Signed and unsigned
template<class _Traits>
inline basic_ostream<char, _Traits>&
operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
{ return (__out << reinterpret_cast<const char*>(__s)); }
template<class _Traits>
inline basic_ostream<char, _Traits> &
operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
{ return (__out << reinterpret_cast<const char*>(__s)); }
//@}
// Standard basic_ostream manipulators
template<typename _CharT, typename _Traits>
inline basic_ostream<_CharT, _Traits>&
endl(basic_ostream<_CharT, _Traits>& __os)
{ return flush(__os.put(__os.widen('\n'))); }
template<typename _CharT, typename _Traits>
inline basic_ostream<_CharT, _Traits>&
ends(basic_ostream<_CharT, _Traits>& __os)
{ return __os.put(_CharT()); }
template<typename _CharT, typename _Traits>
inline basic_ostream<_CharT, _Traits>&
flush(basic_ostream<_CharT, _Traits>& __os)
{ return __os.flush(); }
#if __cplusplus >= 201103L
template<typename _CharT, typename _Traits, typename _Tp>
inline basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
{ return (__os << __x); }
#endif // C++11
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#include <bits/ostream.tcc>
#endif /* _GLIBCXX_OSTREAM */
#ifndef _GLIBCXX_ISTREAM
#define _GLIBCXX_ISTREAM 1
#pragma GCC system_header
#include <ios>
#include <ostream>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _CharT, typename _Traits>
class basic_istream : virtual public basic_ios<_CharT, _Traits>
{
public:
// Types (inherited from basic_ios (27.4.4)):
typedef _CharT char_type;
typedef typename _Traits::int_type int_type;
typedef typename _Traits::pos_type pos_type;
typedef typename _Traits::off_type off_type;
typedef _Traits traits_type;
// Non-standard Types:
typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
typedef basic_ios<_CharT, _Traits> __ios_type;
typedef basic_istream<_CharT, _Traits> __istream_type;
typedef num_get<_CharT, istreambuf_iterator<_CharT, _Traits> >
__num_get_type;
typedef ctype<_CharT> __ctype_type;
protected:
streamsize _M_gcount;
public:
explicit
basic_istream(__streambuf_type* __sb)
: _M_gcount(streamsize(0))
{ this->init(__sb); }
virtual
~basic_istream()
{ _M_gcount = streamsize(0); }
/// Safe prefix/suffix operations.
class sentry;
friend class sentry;
__istream_type&
operator>>(__istream_type& (*__pf)(__istream_type&))
{ return __pf(*this); }
__istream_type&
operator>>(__ios_type& (*__pf)(__ios_type&))
{
__pf(*this);
return *this;
}
__istream_type&
operator>>(ios_base& (*__pf)(ios_base&))
{
__pf(*this);
return *this;
}
__istream_type&
operator>>(bool& __n)
{ return _M_extract(__n); }
__istream_type&
operator>>(short& __n);
__istream_type&
operator>>(unsigned short& __n)
{ return _M_extract(__n); }
__istream_type&
operator>>(int& __n);
__istream_type&
operator>>(unsigned int& __n)
{ return _M_extract(__n); }
__istream_type&
operator>>(long& __n)
{ return _M_extract(__n); }
__istream_type&
operator>>(unsigned long& __n)
{ return _M_extract(__n); }
#ifdef _GLIBCXX_USE_LONG_LONG
__istream_type&
operator>>(long long& __n)
{ return _M_extract(__n); }
__istream_type&
operator>>(unsigned long long& __n)
{ return _M_extract(__n); }
#endif
__istream_type&
operator>>(float& __f)
{ return _M_extract(__f); }
__istream_type&
operator>>(double& __f)
{ return _M_extract(__f); }
__istream_type&
operator>>(long double& __f)
{ return _M_extract(__f); }
//@}
__istream_type&
operator>>(void*& __p)
{ return _M_extract(__p); }
__istream_type&
operator>>(__streambuf_type* __sb);
//@}
// [27.6.1.3] unformatted input
/**
* @brief Character counting
* @return The number of characters extracted by the previous
* unformatted input function dispatched for this stream.
*/
streamsize
gcount() const
{ return _M_gcount; }
int_type
get();
__istream_type&
get(char_type& __c);
__istream_type&
get(char_type* __s, streamsize __n, char_type __delim);
__istream_type&
get(char_type* __s, streamsize __n)
{ return this->get(__s, __n, this->widen('\n')); }
__istream_type&
get(__streambuf_type& __sb, char_type __delim);
__istream_type&
get(__streambuf_type& __sb)
{ return this->get(__sb, this->widen('\n')); }
__istream_type&
getline(char_type* __s, streamsize __n, char_type __delim);
__istream_type&
ignore(streamsize __n, int_type __delim);
__istream_type&
ignore(streamsize __n);
__istream_type&
ignore();
int_type
peek();
__istream_type&
read(char_type* __s, streamsize __n);
streamsize
readsome(char_type* __s, streamsize __n);
__istream_type&
putback(char_type __c);
__istream_type&
unget();
int
sync();
pos_type
tellg();
__istream_type&
seekg(pos_type);
__istream_type&
seekg(off_type, ios_base::seekdir);
//@}
protected:
basic_istream()
: _M_gcount(streamsize(0))
{ this->init(0); }
template<typename _ValueT>
__istream_type&
_M_extract(_ValueT& __v);
};
/// Explicit specialization declarations, defined in src/istream.cc.
template<>
basic_istream<char>&
basic_istream<char>::
getline(char_type* __s, streamsize __n, char_type __delim);
template<>
basic_istream<char>&
basic_istream<char>::
ignore(streamsize __n);
template<>
basic_istream<char>&
basic_istream<char>::
ignore(streamsize __n, int_type __delim);
#ifdef _GLIBCXX_USE_WCHAR_T
template<>
basic_istream<wchar_t>&
basic_istream<wchar_t>::
getline(char_type* __s, streamsize __n, char_type __delim);
template<>
basic_istream<wchar_t>&
basic_istream<wchar_t>::
ignore(streamsize __n);
template<>
basic_istream<wchar_t>&
basic_istream<wchar_t>::
ignore(streamsize __n, int_type __delim);
#endif
template<typename _CharT, typename _Traits>
class basic_istream<_CharT, _Traits>::sentry
{
// Data Members.
bool _M_ok;
public:
/// Easy access to dependent types.
typedef _Traits traits_type;
typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
typedef basic_istream<_CharT, _Traits> __istream_type;
typedef typename __istream_type::__ctype_type __ctype_type;
typedef typename _Traits::int_type __int_type;
explicit
sentry(basic_istream<_CharT, _Traits>& __is, bool __noskipws = false);
#if __cplusplus >= 201103L
explicit
#endif
operator bool() const
{ return _M_ok; }
};
template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c);
template<class _Traits>
inline basic_istream<char, _Traits>&
operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
{ return (__in >> reinterpret_cast<char&>(__c)); }
template<class _Traits>
inline basic_istream<char, _Traits>&
operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
{ return (__in >> reinterpret_cast<char&>(__c)); }
//@}
template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s);
// Explicit specialization declaration, defined in src/istream.cc.
template<>
basic_istream<char>&
operator>>(basic_istream<char>& __in, char* __s);
template<class _Traits>
inline basic_istream<char, _Traits>&
operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
{ return (__in >> reinterpret_cast<char*>(__s)); }
template<class _Traits>
inline basic_istream<char, _Traits>&
operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
{ return (__in >> reinterpret_cast<char*>(__s)); }
//@}
template<typename _CharT, typename _Traits>
class basic_iostream
: public basic_istream<_CharT, _Traits>,
public basic_ostream<_CharT, _Traits>
{
public:
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 271. basic_iostream missing typedefs
// Types (inherited):
typedef _CharT char_type;
typedef typename _Traits::int_type int_type;
typedef typename _Traits::pos_type pos_type;
typedef typename _Traits::off_type off_type;
typedef _Traits traits_type;
// Non-standard Types:
typedef basic_istream<_CharT, _Traits> __istream_type;
typedef basic_ostream<_CharT, _Traits> __ostream_type;
explicit
basic_iostream(basic_streambuf<_CharT, _Traits>* __sb)
: __istream_type(__sb), __ostream_type(__sb) { }
virtual
~basic_iostream() { }
protected:
basic_iostream()
: __istream_type(), __ostream_type() { }
};
template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>&
ws(basic_istream<_CharT, _Traits>& __is);
#if __cplusplus >= 201103L
template<typename _CharT, typename _Traits, typename _Tp>
inline basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
{ return (__is >> __x); }
#endif // C++11
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
#include <bits/istream.tcc>
#endif /* _GLIBCXX_ISTREAM */
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
//@{
extern istream cin; /// Linked to standard input
extern ostream cout; /// Linked to standard output
extern ostream cerr; /// Linked to standard error (unbuffered)
extern ostream clog; /// Linked to standard error (buffered)
#ifdef _GLIBCXX_USE_WCHAR_T
extern wistream wcin; /// Linked to standard input
extern wostream wcout; /// Linked to standard output
extern wostream wcerr; /// Linked to standard error (unbuffered)
extern wostream wclog; /// Linked to standard error (buffered)
#endif
//@}
// For construction of filebuffers for cout, cin, cerr, clog et. al.
static ios_base::Init __ioinit;
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
#endif /* _GLIBCXX_IOSTREAM */
using namespace std;
int main(){
cout<<"hi";
return 0;
}共 55 篇博客