Compilare: main.cpp: In function 'void DEFEU(int, int)': main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); ++i) ~~^~~~~~~~~~~~~~~ main.cpp:21:9: warning: unused variable 'necuplati' [-Wunused-variable] int necuplati = 0; ^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:88:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G2[pos].size(); ++i) ~~^~~~~~~~~~~~~~~~ main.cpp:100:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ans.size()!= 2 * N) ~~~~~~~~~~^~~~~~~~ main.cpp:104:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ans.size(); ++i) ~~^~~~~~~~~~~~