Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:22:9: error: ‘i’ was not declared in this scope for(i=0;i<n;i++) ^ user.cpp:25:13: error: ‘j’ was not declared in this scope for(j=0;j<m;j++) ^ user.cpp:27:39: error: no matching function for call to ‘std::vector<std::pair<std::__cxx11::basic_string<char>, int> >::push_back(<brace-enclosed initializer list>)’ Columns.push_back({col, i + 1}); ^ In file included from /usr/include/c++/6/vector:64:0, from /usr/include/c++/6/queue:61, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:86, from user.cpp:1: /usr/include/c++/6/bits/stl_vector.h:914:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<std::__cxx11::basic_string<char>, int>; _Alloc = std::allocator<std::pair<std::__cxx11::basic_string<char>, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<std::__cxx11::basic_string<char>, int>] push_back(const value_type& __x) ^~~~~~~~~ /usr/include/c++/6/bits/stl_vector.h:914:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘const value_type& {aka const std::pair<std::__cxx11::basic_string<char>, int>&}’ /usr/include/c++/6/bits/stl_vector.h:932:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<std::__cxx11::basic_string<char>, int>; _Alloc = std::allocator<std::pair<std::__cxx11::basic_string<char>, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<std::__cxx11::basic_string<char>, int>] push_back(value_type&& __x) ^~~~~~~~~ /usr/include/c++/6/bits/stl_vector.h:932:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘std::vector<std::pair<std::__cxx11::basic_string<char>, int> >::value_type&& {aka std::pair<std::__cxx11::basic_string<char>, int>&&}’ user.cpp:30:9: error: ‘i’ was not declared in this scope for(i=0;i<n;i++) ^