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#include <cstdio>

#include <iostream>

#include <fstream>



using namespace std;



#ifdef __linux__

ifstream __ebeNull("/dev/null");

FILE *__ebe_stdin = stdin;

#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)

ifstream __ebeNull("/dev/null");

FILE *__ebe_stdin = stdin;

#elif __APPLE__

ifstream __ebeNull("/dev/null");

FILE *__ebe_stdin = stdin;

#else

ifstream __ebeNull("nul");

FILE __ebe_stdin = *stdin;

#endif

streambuf *__ebe_cin;

FILE *__ebe_NULL_fp;



void __ebeSetNULL()

{

    __ebe_cin = cin.rdbuf();

    cin.rdbuf(__ebeNull.rdbuf());

#ifdef __linux__

    __ebe_stdin = stdin;

    stdin = __ebe_NULL_fp;

#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)

    __ebe_stdin = stdin;

    stdin = __ebe_NULL_fp;

#elif __APPLE__

    __ebe_stdin = stdin;

    stdin = __ebe_NULL_fp;

#else

    __ebe_stdin = *stdin;

    *stdin = *__ebe_NULL_fp;

#endif

}



void __ebeSetNormal()

{

    cin.rdbuf(__ebe_cin);

#ifdef __linux__

    stdin = __ebe_stdin;

#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)

    stdin = __ebe_stdin;

#elif __APPLE__

    stdin = __ebe_stdin;

#else

    *stdin = __ebe_stdin;

#endif

}



class __EbeUnBuffer

{

public:

    __EbeUnBuffer();

};



__EbeUnBuffer::__EbeUnBuffer()

{

    setbuf(stdout,NULL);

    setbuf(stderr,NULL);

#ifdef __linux__

    __ebe_NULL_fp = fopen("/dev/null","r");

#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)

    __ebe_NULL_fp = fopen("/dev/null","r");

#elif __APPLE__

    __ebe_NULL_fp = fopen("/dev/null","r");

#else

    __ebe_NULL_fp = fopen("nul","r");

#endif

}



__EbeUnBuffer __unEbeBuffer;