Compilare: main.cpp: In member function 'void Task::print_output()': main.cpp:146:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 146 | for (int i = 0; i < ctc.size(); ++i) { | ~~^~~~~~~~~~~~ main.cpp:154:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 154 | for (int i = 0; i < aux.size(); ++i) { | ~~^~~~~~~~~~~~ main.cpp:145:9: warning: unused variable 'index' [-Wunused-variable] 145 | int index = 1; | ^~~~~ main.cpp: In member function 'void Task::tarjan(int, int&)': main.cpp:121:26: warning: 'current' may be used uninitialized [-Wmaybe-uninitialized] 121 | while (!st.empty() && current != node) { | ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:116:11: note: 'current' was declared here 116 | int current; | ^~~~~~~