Compilare: main.cpp: In function 'void dfs(int)': main.cpp:15:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(int i=0; i<l[nod].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs1(int)': main.cpp:32:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int i=0;i<l[nod].size();i++) | ~^~~~~~~~~~~~~~