Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:21:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (i = 0; i < adj[node].size() && gasit == false; ++i) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int, int)': main.cpp:45:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (i = 0; i < adj[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:58:18: warning: unused variable 'j' [-Wunused-variable] 58 | int n, m, i, j, a, b; | ^