Compilare: user.cpp: In function ‘void CodeA()’: user.cpp:22:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < a.size(); ++i) ^ user.cpp: In function ‘void rezolvare()’: user.cpp:38:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < a.size(); ++i) ^ user.cpp:54:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < b.size()) ^