Compilare: main.cpp: In member function 'int graph::connectedComponents()': main.cpp:94:9: warning: unused variable 'x' [-Wunused-variable] 94 | int x, y, ct = 0; | ^ main.cpp:94:12: warning: unused variable 'y' [-Wunused-variable] 94 | int x, y, ct = 0; | ^ main.cpp: In member function 'void graph::dfs(int, std::vector<int>&)': main.cpp:113:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | for(int i = 0; i < G[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> graph::minimumDistance(int)': main.cpp:137:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 137 | for(int i = 0; i < G[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::dfsBiconnected(int, int, std::vector<int>, std::vector<int>, std::vector<int>&, std::vector<std::vector<int> >&, int)': main.cpp:158:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 158 | for(int i = 0; i < G[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<std::vector<int> > graph::biconnectedComponents()': main.cpp:203:9: warning: unused variable 'x' [-Wunused-variable] 203 | int x, y, ct; | ^ main.cpp:203:12: warning: unused variable 'y' [-Wunused-variable] 203 | int x, y, ct; | ^ main.cpp: In member function 'void graph::dfsSccDirect(int, std::vector<int>&, std::stack<int>&)': main.cpp:225:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 225 | for(int i = 0; i < G[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'void graph::dfsSccReverse(int, std::vector<int>&, std::vector<std::vector<int> >&, int)': main.cpp:241:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 241 | for(int i = 0; i < reverseG[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<std::vector<int> > graph::scc()': main.cpp:264:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 264 | for(int j = 0; j < G[i].size(); ++j) | ~~^~~~~~~~~~~~~ main.cpp:253:9: warning: unused variable 'x' [-Wunused-variable] 253 | int x, y, ct; | ^ main.cpp:253:12: warning: unused variable 'y' [-Wunused-variable] 253 | int x, y, ct; | ^ main.cpp: In member function 'void graph::dfsTopo(int, std::vector<bool>&)': main.cpp:292:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 292 | for(int i = 0; i < G[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> graph::topologicalSort()': main.cpp:306:9: warning: unused variable 'x' [-Wunused-variable]