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View Compilation Error

0_0_14575055_16893.cpp: In function 'void dfs(int)':
0_0_14575055_16893.cpp:129:20: error: no matching function for call to 'max(ll&, int&)'
     ans=max(ans,sum);
                    ^
0_0_14575055_16893.cpp:129:20: note: candidates are:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61:0,
                 from 0_0_14575055_16893.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:217:5: note: template<class _Tp> const _Tp& std::max(const _Tp&, const _Tp&)
     max(const _Tp& __a, const _Tp& __b)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:217:5: note:   template argument deduction/substitution failed:
0_0_14575055_16893.cpp:129:20: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
     ans=max(ans,sum);
                    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61:0,
                 from 0_0_14575055_16893.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:261:5: note: template<class _Tp, class _Compare> const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:261:5: note:   template argument deduction/substitution failed:
0_0_14575055_16893.cpp:129:20: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
     ans=max(ans,sum);
                    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_14575055_16893.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3449:5: note: template<class _Tp> _Tp std::max(std::initializer_list<_Tp>)
     max(initializer_list<_Tp> __l)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3449:5: note:   template argument deduction/substitution failed:
0_0_14575055_16893.cpp:129:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
     ans=max(ans,sum);
                    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_14575055_16893.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3454:5: note: template<class _Tp, class _Compare> _Tp std::max(std::initializer_list<_Tp>, _Compare)
     max(initializer_list<_Tp> __l, _Compare __comp)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3454:5: note:   template argument deduction/substitution failed:
0_0_14575055_16893.cpp:129:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
     ans=max(ans,sum);
                    ^


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