Compilare: main.cpp: In function 'void dfs(int)': main.cpp:29:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int i = 0; i < v[a].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:8: warning: 'p1' may be used uninitialized [-Wmaybe-uninitialized] 72 | dfs(p1); | ~~~^~~~ main.cpp:59:20: note: 'p1' was declared here 59 | int max1 = -1, p1; | ^~