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View Compilation Error

0_0_18749671_20809.cpp: In function 'int main()':
0_0_18749671_20809.cpp:30:60: error: no matching function for call to 'get(int)'
   ans1 = max(get(0,0)+get(1,len-4) , get(0,len-5)+get(len-4));
                                                            ^
0_0_18749671_20809.cpp:30:60: note: candidates are:
0_0_18749671_20809.cpp:11:4: note: ll get(int, int)
 ll get(int i , int j)
    ^
0_0_18749671_20809.cpp:11:4: note:   candidate expects 2 arguments, 1 provided
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60:0,
                 from 0_0_18749671_20809.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:153:5: note: template<long long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:153:5: note:   template argument deduction/substitution failed:
0_0_18749671_20809.cpp:30:60: note:   mismatched types 'const std::pair<_Tp1, _Tp2>' and 'int'
   ans1 = max(get(0,0)+get(1,len-4) , get(0,len-5)+get(len-4));
                                                            ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60:0,
                 from 0_0_18749671_20809.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:148:5: note: template<long long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:148:5: note:   template argument deduction/substitution failed:
0_0_18749671_20809.cpp:30:60: note:   mismatched types 'std::pair<_Tp1, _Tp2>' and 'int'
   ans1 = max(get(0,0)+get(1,len-4) , get(0,len-5)+get(len-4));
                                                            ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60:0,
                 from 0_0_18749671_20809.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:143:5: note: template<long long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:143:5: note:   template argument deduction/substitution failed:
0_0_18749671_20809.cpp:30:60: note:   mismatched types 'std::pair<_Tp1, _Tp2>' and 'int'
   ans1 = max(get(0,0)+get(1,len-4) , get(0,len-5)+get(len-4));
                                                            ^
0_0_18749671_20809.cpp:34:61: error: no matching function for call to 'get(int)'
    ans2 = max(get(0,0)+get(1,len-5) , get(0,len-6)+get(len-5));
                                                             ^
0_0_18749671_20809.cpp:34:61: note: candidates are:
0_0_18749671_20809.cpp:11:4: note: ll get(int, int)
 ll get(int i , int j)
    ^
0_0_18749671_20809.cpp:11:4: note:   candidate expects 2 arguments, 1 provided
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60:0,
                 from 0_0_18749671_20809.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:153:5: note: template<long long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(const std::pair<_Tp1, _Tp2>&)
     get(const std::pair<_Tp1, _Tp2>& __in) noexcept
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:153:5: note:   template argument deduction/substitution failed:
0_0_18749671_20809.cpp:34:61: note:   mismatched types 'const std::pair<_Tp1, _Tp2>' and 'int'
    ans2 = max(get(0,0)+get(1,len-5) , get(0,len-6)+get(len-5));
                                                             ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60:0,
                 from 0_0_18749671_20809.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:148:5: note: template<long long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(std::pair<_Tp1, _Tp2>&&)
     get(std::pair<_Tp1, _Tp2>&& __in) noexcept
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:148:5: note:   template argument deduction/substitution failed:
0_0_18749671_20809.cpp:34:61: note:   mismatched types 'std::pair<_Tp1, _Tp2>' and 'int'
    ans2 = max(get(0,0)+get(1,len-5) , get(0,len-6)+get(len-5));
                                                             ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60:0,
                 from 0_0_18749671_20809.cpp:5:
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:143:5: note: template<long long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(std::pair<_Tp1, _Tp2>&)
     get(std::pair<_Tp1, _Tp2>& __in) noexcept
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:143:5: note:   template argument deduction/substitution failed:
0_0_18749671_20809.cpp:34:61: note:   mismatched types 'std::pair<_Tp1, _Tp2>' and 'int'
    ans2 = max(get(0,0)+get(1,len-5) , get(0,len-6)+get(len-5));
                                                             ^


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