Eroare de compilare: main.cpp: In function 'void dfs(int)': main.cpp:10:18: error: found ':' in nested-name-specifier, expected '::' 10 | while(auto it:v[nod]) | ^ | :: main.cpp:10:16: error: 'it' has not been declared 10 | while(auto it:v[nod]) | ^~ main.cpp:10:20: error: qualified-id in declaration before '[' token 10 | while(auto it:v[nod]) | ^ main.cpp:11:16: error: 'it' was not declared in this scope; did you mean 'int'? 11 | if(viz[it]==false) | ^~ | int main.cpp: In function 'int main()': main.cpp:21:23: error: no matching function for call to 'std::vector<std::vector<int> >::push_back(int&)' 21 | v[a].push_back(b); | ~~~~~~~~~~~~~~^~~ In file included from /usr/include/c++/12.2.1/vector:64, from /usr/include/c++/12.2.1/functional:62, from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/stdc++.h:71, from main.cpp:1: /usr/include/c++/12.2.1/bits/stl_vector.h:1276:7: note: candidate: 'constexpr void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; value_type = std::vector<int>]' 1276 | push_back(const value_type& __x) | ^~~~~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1276:35: note: no known conversion for argument 1 from 'int' to 'const std::vector<std::vector<int> >::value_type&' {aka 'const std::vector<int>&'} 1276 | push_back(const value_type& __x) | ~~~~~~~~~~~~~~~~~~^~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1293:7: note: candidate: 'constexpr void std::vector<_Tp, _Alloc>::push_back(value_type&&) [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; value_type = std::vector<int>]' 1293 | push_back(value_type&& __x) | ^~~~~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1293:30: note: no known conversion for argument 1 from 'int' to 'std::vector<std::vector<int> >::value_type&&' {aka 'std::vector<int>&&'} 1293 | push_back(value_type&& __x) | ~~~~~~~~~~~~~^~~ main.cpp:22:23: error: no matching function for call to 'std::vector<std::vector<int> >::push_back(int&)' 22 | v[b].push_back(a); | ~~~~~~~~~~~~~~^~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1276:7: note: candidate: 'constexpr void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; value_type = std::vector<int>]' 1276 | push_back(const value_type& __x) | ^~~~~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1276:35: note: no known conversion for argument 1 from 'int' to 'const std::vector<std::vector<int> >::value_type&' {aka 'const std::vector<int>&'} 1276 | push_back(const value_type& __x) | ~~~~~~~~~~~~~~~~~~^~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1293:7: note: candidate: 'constexpr void std::vector<_Tp, _Alloc>::push_back(value_type&&) [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; value_type = std::vector<int>]' 1293 | push_back(value_type&& __x) | ^~~~~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1293:30: note: no known conversion for argument 1 from 'int' to 'std::vector<std::vector<int> >::value_type&&' {aka 'std::vector<int>&&'} 1293 | push_back(value_type&& __x) | ~~~~~~~~~~~~~^~~ Non zero exit status: 1