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View Compilation Error

0_0_32329995_10539.cpp: In function 'int main()':
0_0_32329995_10539.cpp:21:10: error: no match for 'operator!=' (operand types are 'int' and 'std::multiset<int>::iterator {aka std::_Rb_tree_const_iterator<int>}')
     if(it!=st.end()){
          ^
0_0_32329995_10539.cpp:21:10: note: candidates are:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:64:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_tree.h:61,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:60,
                 from 0_0_32329995_10539.cpp:2:
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_32329995_10539.cpp:21:19: note:   mismatched types 'const std::pair<_T1, _T2>' and 'int'
     if(it!=st.end()){
                   ^
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++/bits/stl_tree.h:61,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:60,
                 from 0_0_32329995_10539.cpp:2:
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_32329995_10539.cpp:21:19: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
     if(it!=st.end()){
                   ^
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++/bits/stl_tree.h:61,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:60,
                 from 0_0_32329995_10539.cpp:2:
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_32329995_10539.cpp:21:19: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
     if(it!=st.end()){
                   ^
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++/bits/stl_tree.h:61,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:60,
                 from 0_0_32329995_10539.cpp:2:
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_32329995_10539.cpp:21:19: note:   mismatched types 'const std::move_iterator<_Iterator>' and 'int'
     if(it!=st.end()){
                   ^
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++/bits/stl_tree.h:61,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:60,
                 from 0_0_32329995_10539.cpp:2:
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_32329995_10539.cpp:21:19: note:   mismatched types 'const std::move_iterator<_Iterator>' and 'int'
     if(it!=st.end()){
                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_tree.h:62:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:60,
                 from 0_0_32329995_10539.cpp:2:
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<_Tp1>&, const std::allocator<_T2>&)
     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_32329995_10539.cpp:21:19: note:   mismatched types 'const std::allocator<_Tp1>' and 'int'
     if(it!=st.end()){
                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_tree.h:62:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:60,
                 from 0_0_32329995_10539.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/allocator.h:143:5: note: template<class _Tp> bool std::operator!=(const std::allocator<_Tp1>&, const std::allocator<_Tp1>&)
     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_32329995_10539.cpp:21:19: note:   mismatched types 'const std::allocator<_Tp1>' and 'int'
     if(it!=st.end()){
                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:60:0,
                 from 0_0_32329995_10539.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_tree.h:329:5: note: template<class _Val> bool std::operator!=(const std::_Rb_tree_iterator<_Tp>&, const std::_Rb_tree_const_iterator<_Val>&)
     operator!=(const _Rb_tree_iterator<_Val>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_tree.h:329:5: note:   template argument deduction/substitution failed:
0_0_32329995_10539.cpp:21:19: note:   mismatched types 'const std::_Rb_tree_iterator<_Tp>' and 'int'
     if(it!=st.end()){
                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:60:0,
                 from 0_0_32329995_10539.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_tree.h:990:5: note: template<class _Key, class _Val, class _KeyOfValue, class _Compare, class _Alloc> bool std::operator!=(const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&, const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&)
     operator!=(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_tree.h:990:5: note:   template argument deduction/substitution failed:
0_0_32329995_10539.cpp:21:19: note:   mismatched types 'const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>' and 'int'
     if(it!=st.end()){
                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:61:0,
                 from 0_0_32329995_10539.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_set.h:817:5: note: template<class _Key, class _Compare, class _Alloc> bool std::operator!=(const std::set<_Key, _Compare, _Alloc>&, const std::set<_Key, _Compare, _Alloc>&)
     operator!=(const set<_Key, _Compare, _Alloc>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_set.h:817:5: note:   template argument deduction/substitution failed:
0_0_32329995_10539.cpp:21:19: note:   mismatched types 'const std::set<_Key, _Compare, _Alloc>' and 'int'
     if(it!=st.end()){
                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/set:62:0,
                 from 0_0_32329995_10539.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_multiset.h:801:5: note: template<class _Key, class _Compare, class _Alloc> bool std::operator!=(const std::multiset<_Key, _Compare, _Alloc>&, const std::multiset<_Key, _Compare, _Alloc>&)
     operator!=(const multiset<_Key, _Compare, _Alloc>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_multiset.h:801:5: note:   template argument deduction/substitution failed:
0_0_32329995_10539.cpp:21:19: note:   mismatched types 'const std::multiset<_Key, _Compare, _Alloc>' and 'int'
     if(it!=st.end()){
                   ^
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 0_0_32329995_10539.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<_S


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