Compilare: main.cpp: In function 'void DFS(int)': main.cpp:28:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'void DFS2(int)': main.cpp:41:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:145:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<adaugat.size();i++) ~^~~~~~~~~~~~~~~ main.cpp:98:9: warning: unused variable 'k' [-Wunused-variable] int k=0; ^