In file included from /usr/include/c++/11/csetjmp:42,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:42,
                 from answer.code:100:
/usr/include/setjmp.h:54:12: error: conflicting declaration of C function ‘ll __sigsetjmp(__jmp_buf_tag*, ll)’
   54 | extern int __sigsetjmp (struct __jmp_buf_tag __env[1], int __savemask) __THROWNL;
      |            ^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:35,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/gthr.h:148,
                 from /usr/include/c++/11/ext/atomicity.h:35,
                 from /usr/include/c++/11/bits/ios_base.h:39,
                 from /usr/include/c++/11/streambuf:41,
                 from /usr/include/c++/11/bits/streambuf_iterator.h:35,
                 from /usr/include/c++/11/iterator:66,
                 from /usr/include/c++/11/bits/ranges_algobase.h:36,
                 from /usr/include/c++/11/bits/ranges_algo.h:35,
                 from /usr/include/c++/11/algorithm:64,
                 from answer.code:1:
/usr/include/pthread.h:719:12: note: previous declaration ‘int __sigsetjmp(__jmp_buf_tag*, int)’
  719 | extern int __sigsetjmp (struct __jmp_buf_tag *__env, int __savemask) __THROWNL;
      |            ^~~~~~~~~~~
answer.code:50:13: error: expected ‘;’ at end of member declaration
   50 | #define int ll
      |             ^~
In file included from /usr/include/signal.h:57,
                 from /usr/include/c++/11/csignal:42,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:43,
                 from answer.code:100:
/usr/include/x86_64-linux-gnu/bits/types/siginfo_t.h:93:23: error: ‘si_addr_lsb’ does not name a type
   93 |             short int si_addr_lsb;  /* Valid LSB of the reported address.  */
      |                       ^~~~~~~~~~~
/usr/include/x86_64-linux-gnu/bits/types/siginfo_t.h:93:23: note: the macro ‘si_addr_lsb’ had not yet been defined
/usr/include/x86_64-linux-gnu/bits/types/siginfo_t.h:139: note: it was later defined here
  139 | #define si_addr_lsb     _sifields._sigfault.si_addr_lsb
      | 
answer.code:50:13: error: expected ‘;’ at end of member declaration
   50 | #define int ll
      |             ^~
In file included from /usr/include/signal.h:57,
                 from /usr/include/c++/11/csignal:42,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:43,
                 from answer.code:100:
/usr/include/x86_64-linux-gnu/bits/types/siginfo_t.h:110:28: error: ‘si_band’ does not name a type
  110 |             __SI_BAND_TYPE si_band;     /* Band event for SIGPOLL.  */
      |                            ^~~~~~~
/usr/include/x86_64-linux-gnu/bits/types/siginfo_t.h:110:28: note: the macro ‘si_band’ had not yet been defined
/usr/include/x86_64-linux-gnu/bits/types/siginfo_t.h:143: note: it was later defined here
  143 | #define si_band         _sifields._sigpoll.si_band
      | 
answer.code:50:13: error: ‘ll’ does not name a type
   50 | #define int ll
      |             ^~
answer.code:50:13: error: expected ‘;’ at end of member declaration
   50 | #define int ll
      |             ^~
In file included from /usr/include/signal.h:57,
                 from /usr/include/c++/11/csignal:42,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:43,
                 from answer.code:100:
/usr/include/x86_64-linux-gnu/bits/types/siginfo_t.h:120:26: error: ‘_arch’ does not name a type; did you mean ‘si_arch’?
  120 |             unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
      |                          ^~~~~
      |                          si_arch
In file included from /usr/include/signal.h:306,
                 from /usr/include/c++/11/csignal:42,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:43,
                 from answer.code:100:
/usr/include/x86_64-linux-gnu/sys/ucontext.h:37:37: error: expected initializer before ‘greg_t’
   37 | __extension__ typedef long long int greg_t;
      |                                     ^~~~~~
/usr/include/x86_64-linux-gnu/sys/ucontext.h:46:9: error: ‘greg_t’ does not name a type
   46 | typedef greg_t gregset_t[__NGREG];
      |         ^~~~~~
answer.code:50:13: error: expected ‘;’ at end of member declaration
   50 | #define int ll
      |             ^~
In file included from /usr/include/signal.h:306,
                 from /usr/include/c++/11/csignal:42,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:43,
                 from answer.code:100:
/usr/include/x86_64-linux-gnu/sys/ucontext.h:103:22: error: ‘significand’ does not name a type
  103 |   unsigned short int __ctx(significand)[4];
      |                      ^~~~~
answer.code:50:13: error: expected ‘;’ at end of member declaration
   50 | #define int ll
      |             ^~
answer.code:50:13: error: redeclaration of ‘short unsigned int _libc_fpxreg::ll’
answer.code:50:13: note: previous declar...