Eroare de compilare: user.cpp: In function ‘void do_test()’: user.cpp:66:19: error: no match for ‘operator^=’ (operand types are ‘std::bitset<110u>::reference’ and ‘int’) a[nh[x]][nh[y]] ^= 1; ^ user.cpp:66:19: note: candidates are: In file included from /usr/include/c++/4.8/ios:42:0, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/sstream:38, from /usr/include/c++/4.8/complex:45, from /usr/include/c++/4.8/ccomplex:38, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52, from user.cpp:1: /usr/include/c++/4.8/bits/ios_base.h:99:3: note: const std::_Ios_Fmtflags& std::operator^=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags) operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b) ^ /usr/include/c++/4.8/bits/ios_base.h:99:3: note: no known conversion for argument 1 from ‘std::bitset<110u>::reference’ to ‘std::_Ios_Fmtflags&’ /usr/include/c++/4.8/bits/ios_base.h:139:3: note: const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode) operator^=(_Ios_Openmode& __a, _Ios_Openmode __b) ^ /usr/include/c++/4.8/bits/ios_base.h:139:3: note: no known conversion for argument 1 from ‘std::bitset<110u>::reference’ to ‘std::_Ios_Openmode&’ /usr/include/c++/4.8/bits/ios_base.h:177:3: note: const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate) operator^=(_Ios_Iostate& __a, _Ios_Iostate __b) ^ /usr/include/c++/4.8/bits/ios_base.h:177:3: note: no known conversion for argument 1 from ‘std::bitset<110u>::reference’ to ‘std::_Ios_Iostate&’ In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:103:0, from user.cpp:1: /usr/include/c++/4.8/future:158:18: note: std::launch& std::operator^=(std::launch&, std::launch) inline launch& operator^=(launch& __x, launch __y) ^ /usr/include/c++/4.8/future:158:18: note: no known conversion for argument 1 from ‘std::bitset<110u>::reference’ to ‘std::launch&’ user.cpp:67:19: error: no match for ‘operator^=’ (operand types are ‘std::bitset<110u>::reference’ and ‘int’) a[nh[y]][nh[x]] ^= 1; } ^ user.cpp:67:19: note: candidates are: In file included from /usr/include/c++/4.8/ios:42:0, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/sstream:38, from /usr/include/c++/4.8/complex:45, from /usr/include/c++/4.8/ccomplex:38, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52, from user.cpp:1: /usr/include/c++/4.8/bits/ios_base.h:99:3: note: const std::_Ios_Fmtflags& std::operator^=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags) operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b) ^ /usr/include/c++/4.8/bits/ios_base.h:99:3: note: no known conversion for argument 1 from ‘std::bitset<110u>::reference’ to ‘std::_Ios_Fmtflags&’ /usr/include/c++/4.8/bits/ios_base.h:139:3: note: const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode) operator^=(_Ios_Openmode& __a, _Ios_Openmode __b) ^ /usr/include/c++/4.8/bits/ios_base.h:139:3: note: no known conversion for argument 1 from ‘std::bitset<110u>::reference’ to ‘std::_Ios_Openmode&’ /usr/include/c++/4.8/bits/ios_base.h:177:3: note: const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate)