Eroare de compilare: user.cpp: In function ‘void sort_points()’: user.cpp:45:12: error: no match for ‘operator+’ (operand types are ‘std::vector<std::pair<double, double> >’ and ‘int’) sort(v + 2, v + n + 1, cmp); ^ user.cpp:45:12: note: candidates are: In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/vector:60, from user.cpp:2: /usr/include/c++/4.8/bits/stl_iterator.h:333:5: note: template<class _Iterator> std::reverse_iterator<_Iterator> std::operator+(typename std::reverse_iterator<_Iterator>::difference_type, const std::reverse_iterator<_Iterator>&) operator+(typename reverse_iterator<_Iterator>::difference_type __n, ^ /usr/include/c++/4.8/bits/stl_iterator.h:333:5: note: template argument deduction/substitution failed: user.cpp:45:14: note: mismatched types ‘const std::reverse_iterator<_Iterator>’ and ‘int’ sort(v + 2, v + n + 1, cmp); ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/vector:60, from user.cpp:2: /usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note: template<class _Iterator> std::move_iterator<_Iterator> std::operator+(typename std::move_iterator<_Iterator>::difference_type, const std::move_iterator<_Iterator>&) operator+(typename move_iterator<_Iterator>::difference_type __n, ^ /usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note: template argument deduction/substitution failed: user.cpp:45:14: note: mismatched types ‘const std::move_iterator<_Iterator>’ and ‘int’ sort(v + 2, v + n + 1, cmp); ^ In file included from /usr/include/c++/4.8/vector:65:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_bvector.h:293:3: note: std::_Bit_iterator std::operator+(std::ptrdiff_t, const std::_Bit_iterator&) operator+(ptrdiff_t __n, const _Bit_iterator& __x) ^ /usr/include/c++/4.8/bits/stl_bvector.h:293:3: note: no known conversion for argument 1 from ‘std::vector<std::pair<double, double> >’ to ‘std::ptrdiff_t {aka int}’ /usr/include/c++/4.8/bits/stl_bvector.h:379:3: note: std::_Bit_const_iterator std::operator+(std::ptrdiff_t, const std::_Bit_const_iterator&) operator+(ptrdiff_t __n, const _Bit_const_iterator& __x) ^ /usr/include/c++/4.8/bits/stl_bvector.h:379:3: note: no known conversion for argument 1 from ‘std::vector<std::pair<double, double> >’ to ‘std::ptrdiff_t {aka int}’ In file included from /usr/include/c++/4.8/string:52:0, from /usr/include/c++/4.8/random:41, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from user.cpp:3: /usr/include/c++/4.8/bits/basic_string.h:2365:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> std::operator+(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&) operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, ^ /usr/include/c++/4.8/bits/basic_string.h:2365:5: note: template argument deduction/substitution failed: user.cpp:45:14: note: ‘std::vector<std::pair<double, double> >’ is not derived from ‘const std::basic_string<_CharT, _Traits, _Alloc>’ sort(v + 2, v + n + 1, cmp); ^ In file included from /usr/include/c++/4.8/string:53:0, from /usr/include/c++/4.8/random:41, from /usr/include/c++/4.8/bits/stl_algo.h:65,