Compilare: main.cpp: In function 'void dfs(int)': main.cpp:34:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(i = 0; i < L[nod].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(j = 0; j < L[nod].size(); j++) | ~~^~~~~~~~~~~~~~~