Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for(int i=0;i<v[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int lca(int, int)': main.cpp:31:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] 31 | if(x==y) | ^~ main.cpp:34:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if' 34 | for(int k=log2;k>=0;k--) | ^~~