Eroare de compilare: main.cpp:8:15: error: variable 'std::ifstream input' has initializer but incomplete type 8 | ifstream input("tunnel.in"); | ^ main.cpp:9:16: error: variable 'std::ofstream output' has initializer but incomplete type 9 | ofstream output("tunnel.out"); | ^ main.cpp: In function 'int main()': main.cpp:177:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 177 | for (int i = 0; i < graph[current].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~ Non zero exit status: 1