Compilare: main.cpp: In function 'void dfs(int)': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (int i = 0; i < graph[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:63:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for (int i = 0; i < graph[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~