Eroare de compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:18:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<nod>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for (i = 0; i < ad[node].size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:186:5: error: reference to 'cin' is ambiguous 186 | cin >> n >> s; | ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:75, from main.cpp:1: /usr/include/c++/10/iostream:60:18: note: candidates are: 'std::istream std::cin' 60 | extern istream cin; /// Linked to standard input | ^~~ main.cpp:179:10: note: 'InParser cin' 179 | InParser cin("arbore3.in"); | ^~~ main.cpp:189:9: error: reference to 'cin' is ambiguous 189 | cin >> tata >> val; | ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:75, from main.cpp:1: /usr/include/c++/10/iostream:60:18: note: candidates are: 'std::istream std::cin' 60 | extern istream cin; /// Linked to standard input | ^~~ main.cpp:179:10: note: 'InParser cin' 179 | InParser cin("arbore3.in"); | ^~~ main.cpp:196:5: error: reference to 'cout' is ambiguous 196 | cout << cnt; | ^~~~ In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:75, from main.cpp:1: /usr/include/c++/10/iostream:61:18: note: candidates are: 'std::ostream std::cout' 61 | extern ostream cout; /// Linked to standard output | ^~~~ main.cpp:180:11: note: 'OutParser cout' 180 | OutParser cout("arbore3.out"); | ^~~~ Non zero exit status: 1