Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:22:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < copii[nod].size(); i++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:36:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < copii[nod].size(); i++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:38:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lant[care_lant[copii[nod][i]]].size() > maxim) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ main.cpp:46:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < copii[nod].size(); i++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void creez_tati(int, int)': main.cpp:91:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < graph[nod].size(); i++) { ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void lca(const std::vector<std::vector<int> >&, const std::vector<std::pair<int, int> >&)': main.cpp:106:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < queries.size(); i++) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:120:12: warning: unused variable 'y' [-Wunused-variable] int x, y; ^ main.cpp: In function 'int parcurgere(int, int)': main.cpp:83:2: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int dfs(int, int)': main.cpp:44:19: warning: 'care' may be used uninitialized in this function [-Wmaybe-uninitialized] lant[care].push_back(nod); ^