Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<elem>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int j=0;j<L[nod].size();j++) | ~^~~~~~~~~~~~~~ main.cpp:13:9: warning: unused variable 's' [-Wunused-variable] 13 | int s=0,sf=0,nr=0; | ^