Compilare: user.cpp: In function ‘void f()’: user.cpp:57:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i(0); i < rez.size(); i++) { ^ user.cpp: In function ‘std::vector<int> solve(std::vector<int>&, std::vector<int>&)’: user.cpp:118:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (n <= (int)a.size() + b.size()) ^ user.cpp:123:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i(0); i < a.size(); i++) ^ user.cpp:126:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i(0); i < b.size(); i++) ^