Compilare: main.cpp: In function 'int main()': main.cpp:101:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<vrajeala>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 101 | for (i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int cb(int)': main.cpp:81:12: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] 81 | return sol; | ^~~