0_0_26029033_3333.cpp: In function 'void dfs(int, int)':
0_0_26029033_3333.cpp:37:12: error: no match for 'operator=' (operand types are 'std::set<int>::reverse_iterator {aka std::reverse_iterator<std::_Rb_tree_const_iterator<int> >}' and 'std::set<int>::iterator {aka std::_Rb_tree_const_iterator<int>}')
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
0_0_26029033_3333.cpp:37:12: note: candidate is:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_26029033_3333.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:97:11: note: std::reverse_iterator<std::_Rb_tree_const_iterator<int> >& std::reverse_iterator<std::_Rb_tree_const_iterator<int> >::operator=(const std::reverse_iterator<std::_Rb_tree_const_iterator<int> >&)
class reverse_iterator
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:97:11: note: no known conversion for argument 1 from 'std::set<int>::iterator {aka std::_Rb_tree_const_iterator<int>}' to 'const std::reverse_iterator<std::_Rb_tree_const_iterator<int> >&'
0_0_26029033_3333.cpp:37:32: error: no match for 'operator!=' (operand types are 'std::set<int>::reverse_iterator {aka std::reverse_iterator<std::_Rb_tree_const_iterator<int> >}' and 'std::set<int>::iterator {aka std::_Rb_tree_const_iterator<int>}')
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
0_0_26029033_3333.cpp:37:32: note: candidates are:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
from 0_0_26029033_3333.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:227:5: note: template<class _T1, class _T2> constexpr bool std::operator!=(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:227:5: note: template argument deduction/substitution failed:
0_0_26029033_3333.cpp:37:45: note: 'std::set<int>::reverse_iterator {aka std::reverse_iterator<std::_Rb_tree_const_iterator<int> >}' is not derived from 'const std::pair<_T1, _T2>'
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_26029033_3333.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:304:5: note: template<class _Iterator> bool std::operator!=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
operator!=(const reverse_iterator<_Iterator>& __x,
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:304:5: note: template argument deduction/substitution failed:
0_0_26029033_3333.cpp:37:45: note: 'std::set<int>::iterator {aka std::_Rb_tree_const_iterator<int>}' is not derived from 'const std::reverse_iterator<_Iterator>'
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_26029033_3333.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:354:5: note: template<class _IteratorL, class _IteratorR> bool std::operator!=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
operator!=(const reverse_iterator<_IteratorL>& __x,
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:354:5: note: template argument deduction/substitution failed:
0_0_26029033_3333.cpp:37:45: note: 'std::set<int>::iterator {aka std::_Rb_tree_const_iterator<int>}' is not derived from 'const std::reverse_iterator<_IteratorR>'
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_26029033_3333.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1060:5: note: template<class _IteratorL, class _IteratorR> bool std::operator!=(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&)
operator!=(const move_iterator<_IteratorL>& __x,
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1060:5: note: template argument deduction/substitution failed:
0_0_26029033_3333.cpp:37:45: note: 'std::set<int>::reverse_iterator {aka std::reverse_iterator<std::_Rb_tree_const_iterator<int> >}' is not derived from 'const std::move_iterator<_Iterator>'
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_26029033_3333.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1066:5: note: template<class _Iterator> bool std::operator!=(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&)
operator!=(const move_iterator<_Iterator>& __x,
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1066:5: note: template argument deduction/substitution failed:
0_0_26029033_3333.cpp:37:45: note: 'std::set<int>::reverse_iterator {aka std::reverse_iterator<std::_Rb_tree_const_iterator<int> >}' is not derived from 'const std::move_iterator<_Iterator>'
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:40:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
from 0_0_26029033_3333.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/postypes.h:221:5: note: template<class _StateT> bool std::operator!=(const std::fpos<_StateT>&, const std::fpos<_StateT>&)
operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/postypes.h:221:5: note: template argument deduction/substitution failed:
0_0_26029033_3333.cpp:37:45: note: 'std::set<int>::reverse_iterator {aka std::reverse_iterator<std::_Rb_tree_const_iterator<int> >}' is not derived from 'const std::fpos<_StateT>'
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:41:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
from 0_0_26029033_3333.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/allocator.h:138:5: note: template<class _T1, class _T2> bool std::operator!=(const std::allocator<_Tp>&, const std::allocator<_Tp>&)
operator!=(const allocator<_T1>&, const allocator<_T2>&)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/allocator.h:138:5: note: template argument deduction/substitution failed:
0_0_26029033_3333.cpp:37:45: note: 'std::set<int>::reverse_iterator {aka std::reverse_iterator<std::_Rb_tree_const_iterator<int> >}' is not derived from 'const std::allocator<_Tp>'
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:41:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
from 0_0_26029033_3333.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/allocator.h:143:5: note: template<class _Tp> bool std::operator!=(const std::allocator<_Tp>&, const std::allocator<_Tp>&)
operator!=(const allocator<_Tp>&, const allocator<_Tp>&)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/allocator.h:143:5: note: template argument deduction/substitution failed:
0_0_26029033_3333.cpp:37:45: note: 'std::set<int>::reverse_iterator {aka std::reverse_iterator<std::_Rb_tree_const_iterator<int> >}' is not derived from 'const std::allocator<_Tp>'
for(it = s[fa].begin(); it != s[fa].end(); it++)
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52:0,
from GCC4.9.2/x86_64
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