Eroare de compilare: In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&, _Compare) [with _RandomAccessIterator = std::pair<int, int>*; _Tp = std::pair<int, int>; _Compare = main()::__lambda0]’: /usr/include/c++/4.8/bits/stl_algo.h:2319:78: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::pair<int, int>*; _Compare = main()::__lambda0]’ /usr/include/c++/4.8/bits/stl_algo.h:2360:62: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = std::pair<int, int>*; _Size = int; _Compare = main()::__lambda0]’ /usr/include/c++/4.8/bits/stl_algo.h:5513:44: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = std::pair<int, int>*; _Compare = main()::__lambda0]’ user.cpp:37:111: required from here /usr/include/c++/4.8/bits/stl_algo.h:2287:35: error: no match for call to ‘(main()::__lambda0) (std::pair<int, int>&, const std::pair<int, int>&)’ while (__comp(*__first, __pivot)) ^ user.cpp:37:35: note: candidates are: sort(coord + 1, coord + n + 1, [&] (pair <int, int> & x, pair <int, int> & y) { return x.second < y.second; }); ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_algo.h:2287:35: note: bool (*)(std::pair<int, int>&, std::pair<int, int>&) <conversion> while (__comp(*__first, __pivot)) ^ /usr/include/c++/4.8/bits/stl_algo.h:2287:35: note: candidate expects 3 arguments, 3 provided user.cpp:37:78: note: main()::__lambda0 sort(coord + 1, coord + n + 1, [&] (pair <int, int> & x, pair <int, int> & y) { return x.second < y.second; }); ^ user.cpp:37:78: note: no known conversion for argument 2 from ‘const std::pair<int, int>’ to ‘std::pair<int, int>&’ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_algo.h:2290:34: error: no match for call to ‘(main()::__lambda0) (const std::pair<int, int>&, std::pair<int, int>&)’ while (__comp(__pivot, *__last)) ^ user.cpp:37:35: note: candidates are: sort(coord + 1, coord + n + 1, [&] (pair <int, int> & x, pair <int, int> & y) { return x.second < y.second; }); ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_algo.h:2290:34: note: bool (*)(std::pair<int, int>&, std::pair<int, int>&) <conversion> while (__comp(__pivot, *__last)) ^ /usr/include/c++/4.8/bits/stl_algo.h:2290:34: note: candidate expects 3 arguments, 3 provided user.cpp:37:78: note: main()::__lambda0 sort(coord + 1, coord + n + 1, [&] (pair <int, int> & x, pair <int, int> & y) { return x.second < y.second; }); ^ user.cpp:37:78: note: no known conversion for argument 1 from ‘const std::pair<int, int>’ to ‘std::pair<int, int>&’