0_0_24372269_28842.cpp: In function 'void dfs(int, int)':
0_0_24372269_28842.cpp:33:12: error: reference to 'begin' is ambiguous
if(begin!=u)
^
0_0_24372269_28842.cpp:25:5: note: candidates are: int begin
int begin;
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:94:0,
from 0_0_24372269_28842.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/valarray:1206:5: note: template<class _Tp> const _Tp* std::begin(const std::valarray<_Tp>&)
begin(const valarray<_Tp>& __va)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/valarray:1196:5: note: template<class _Tp> _Tp* std::begin(std::valarray<_Tp>&)
begin(valarray<_Tp>& __va)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:42:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_24372269_28842.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/initializer_list:89:5: note: template<class _Tp> constexpr const _Tp* std::begin(std::initializer_list<_Tp>)
begin(initializer_list<_Tp> __ils) noexcept
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:51:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_24372269_28842.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:87:5: note: template<class _Tp, long long unsigned int _Nm> _Tp* std::begin(_Tp (&)[_Nm])
begin(_Tp (&__arr)[_Nm])
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:58:5: note: template<class _Container> decltype (__cont.begin()) std::begin(const _Container&)
begin(const _Container& __cont) -> decltype(__cont.begin())
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:48:5: note: template<class _Container> decltype (__cont.begin()) std::begin(_Container&)
begin(_Container& __cont) -> decltype(__cont.begin())
^
0_0_24372269_28842.cpp: In function 'int main()':
0_0_24372269_28842.cpp:67:16: error: reference to 'begin' is ambiguous
while(cin>>begin && begin)
^
0_0_24372269_28842.cpp:25:5: note: candidates are: int begin
int begin;
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:94:0,
from 0_0_24372269_28842.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/valarray:1206:5: note: template<class _Tp> const _Tp* std::begin(const std::valarray<_Tp>&)
begin(const valarray<_Tp>& __va)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/valarray:1196:5: note: template<class _Tp> _Tp* std::begin(std::valarray<_Tp>&)
begin(valarray<_Tp>& __va)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:42:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_24372269_28842.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/initializer_list:89:5: note: template<class _Tp> constexpr const _Tp* std::begin(std::initializer_list<_Tp>)
begin(initializer_list<_Tp> __ils) noexcept
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:51:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_24372269_28842.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:87:5: note: template<class _Tp, long long unsigned int _Nm> _Tp* std::begin(_Tp (&)[_Nm])
begin(_Tp (&__arr)[_Nm])
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:58:5: note: template<class _Container> decltype (__cont.begin()) std::begin(const _Container&)
begin(const _Container& __cont) -> decltype(__cont.begin())
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/range_access.h:48:5: note: template<class _Container> decltype (__cont.begin()) std::begin(_Container&)
begin(_Container& __cont) -> decltype(__cont.begin())
^
0_0_24372269_28842.cpp:67:25: error: reference to 'begin' is ambiguous
while(cin>>begin && begin)
^
0_0_24372269_28842.cpp:25:5: note: candidates are: int begin
int begin;
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:94:0,
from 0_0_24372269_28842.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/valarray:1206:5: note: template<class _Tp> const _Tp* std::begin(const std::valarray<_Tp>&)
begin(const valarray<_Tp>& __va)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/valarray:1196:5: note: template<class _Tp> _Tp* std::begin(std::valarray<_Tp>&)
begin(valarray<_Tp>& __va)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:42:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 0_0_24372269_28842.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/initializer_list:89:5: note: template<class _Tp> constexpr const _Tp* std::begin(std::initializer_list<_Tp>)
begin(initializer_list<_Tp> __ils) noexcept
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:51:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
from GCC4.9.2/x86_64-w64-m
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