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#include <iostream.h>¡¡¡¡¡¡//Êý¾ÝÁ÷ÊäÈ룯Êä³ö
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#include <math.h>¡¡¡¡¡¡¡¡¡¡//¶¨ÒåÊýѧº¯Êý
#include <stdio.h>¡¡¡¡¡¡¡¡ //¶¨ÒåÊäÈ룯Êä³öº¯Êý
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#include <string.h>¡¡¡¡¡¡¡¡//×Ö·û´®´¦Àí
#include <strstrea.h>¡¡¡¡¡¡//»ùÓÚÊý×éµÄÊäÈ룯Êä³ö
#include <time.h>¡¡¡¡¡¡¡¡¡¡//¶¨Òå¹ØÓÚʱ¼äµÄº¯Êý
#include <wchar.h>¡¡¡¡¡¡¡¡ //¿í×Ö·û´¦Àí¼°ÊäÈ룯Êä³ö
#include <wctype.h>¡¡¡¡¡¡¡¡//¿í×Ö·û·ÖÀà
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#include <algorithm>¡¡¡¡¡¡ //STL ͨÓÃËã·¨
#include <bitset>¡¡¡¡¡¡¡¡¡¡//STL λ¼¯ÈÝÆ÷
#include <cctype>
#include <cerrno>
#include <clocale>
#include <cmath>
#include <complex>¡¡¡¡¡¡¡¡ //¸´ÊýÀà
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>¡¡¡¡¡¡¡¡¡¡ //STL Ë«¶Ë¶ÓÁÐÈÝÆ÷
#include <exception>¡¡¡¡¡¡ //Òì³£´¦ÀíÀà
#include <fstream>
#include <functional>¡¡¡¡¡¡//STL ¶¨ÒåÔËË㺯Êý£¨´úÌæÔËËã·û£©
#include <limits>
#include <list>¡¡¡¡¡¡¡¡¡¡¡¡//STL ÏßÐÔÁбíÈÝÆ÷
#include <map>¡¡¡¡¡¡¡¡¡¡¡¡ //STL Ó³ÉäÈÝÆ÷
#include <iomanip>
#include <ios>¡¡¡¡¡¡¡¡¡¡¡¡ //»ù±¾ÊäÈ룯Êä³öÖ§³Ö
#include <iosfwd>¡¡¡¡¡¡¡¡¡¡//ÊäÈ룯Êä³öϵͳʹÓõÄÇ°ÖÃÉùÃ÷
#include <iostream>
#include <istream>¡¡¡¡¡¡¡¡ //»ù±¾ÊäÈëÁ÷
#include <ostream>¡¡¡¡¡¡¡¡ //»ù±¾Êä³öÁ÷
#include <queue>¡¡¡¡¡¡¡¡¡¡ //STL ¶ÓÁÐÈÝÆ÷
#include <set>¡¡¡¡¡¡¡¡¡¡¡¡ //STL ¼¯ºÏÈÝÆ÷
#include <sstream>¡¡¡¡¡¡¡¡ //»ùÓÚ×Ö·û´®µÄÁ÷
#include <stack>¡¡¡¡¡¡¡¡¡¡ //STL ¶ÑÕ»ÈÝÆ÷¡¡¡¡¡¡¡¡
#include <stdexcept>¡¡¡¡¡¡ //±ê×¼Òì³£Àà
#include <streambuf>¡¡¡¡¡¡ //µ×²ãÊäÈ룯Êä³öÖ§³Ö
#include <string>¡¡¡¡¡¡¡¡¡¡//×Ö·û´®Àà
#include <utility>¡¡¡¡¡¡¡¡ //STL ͨÓÃÄ£°åÀà
#include <vector>¡¡¡¡¡¡¡¡¡¡//STL ¶¯Ì¬Êý×éÈÝÆ÷
#include <cwchar>
#include <cwctype>
using namespace std;
//////////////////////////////////////////////////////////////////////////
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#include <complex.h>¡¡¡¡ //¸´Êý´¦Àí
#include <fenv.h>¡¡¡¡¡¡¡¡//¸¡µã»·¾³
#include <inttypes.h>¡¡¡¡//ÕûÊý¸ñʽת»»
#include <stdbool.h>¡¡¡¡ //²¼¶û»·¾³
#include <stdint.h>¡¡¡¡¡¡//ÕûÐÍ»·¾³
#include <tgmath.h>¡¡¡¡¡¡//ͨÓÃÀàÐÍÊýѧºê