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View Compilation Error

0_0_17937512_90.cpp: In function 'int main()':
0_0_17937512_90.cpp:54:45: error: no matching function for call to 'make_pair(long long int&, long long int&)'
             v.push_back(make_pair<ll,ll>(x,y));
                                             ^
0_0_17937512_90.cpp:54:45: note: candidate is:
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_17937512_90.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:276:5: note: template<class _T1, class _T2> constexpr std::pair<typename std::__decay_and_strip<_Tp>::__type, typename std::__decay_and_strip<_T2>::__type> std::make_pair(_T1&&, _T2&&)
     make_pair(_T1&& __x, _T2&& __y)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:276:5: note:   template argument deduction/substitution failed:
0_0_17937512_90.cpp:54:45: note:   cannot convert 'x' (type 'long long int') to type 'long long int&&'
             v.push_back(make_pair<ll,ll>(x,y));
                                             ^
0_0_17937512_90.cpp:57:41: error: no matching function for call to 'make_pair(long long int&, long long int&)'
         v.push_back(make_pair<ll,ll>(n,m));
                                         ^
0_0_17937512_90.cpp:57:41: note: candidate is:
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_17937512_90.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:276:5: note: template<class _T1, class _T2> constexpr std::pair<typename std::__decay_and_strip<_Tp>::__type, typename std::__decay_and_strip<_T2>::__type> std::make_pair(_T1&&, _T2&&)
     make_pair(_T1&& __x, _T2&& __y)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:276:5: note:   template argument deduction/substitution failed:
0_0_17937512_90.cpp:57:41: note:   cannot convert 'n' (type 'long long int') to type 'long long int&&'
         v.push_back(make_pair<ll,ll>(n,m));
                                         ^


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