Compilare: main.cpp: In function 'void dfs(int)': main.cpp:17:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < adj[nod].size(); i++) { ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:43:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i <= berarii.size(); i++) { ~~^~~~~~~~~~~~~~~~~ main.cpp:58:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < rez.size(); i++) { ~~^~~~~~~~~~~~ main.cpp:49:6: warning: unused variable 'cnt' [-Wunused-variable] int cnt = 0; ^~~