Compilare: user.cpp: In function ‘void Add(std::pair<int, int>, int&, int&, std::vector<int>&, std::vector<std::pair<int, int> >&)’: user.cpp:34:13: warning: unused variable ‘w’ [-Wunused-variable] int w = dp[i]; ^ user.cpp:35:13: warning: unused variable ‘q’ [-Wunused-variable] int q = dp[0] + p.first; ^ user.cpp: In function ‘void Erase(std::pair<int, int>, int&, int&, std::vector<int>&, std::vector<std::pair<int, int> >&)’: user.cpp:55:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto i = 0; i < curent.size(); i++) ^ user.cpp:61:17: warning: unused variable ‘w’ [-Wunused-variable] int w = dp[j]; ^ user.cpp: In function ‘int main()’: user.cpp:87:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto i = 0; i < events.size(); i++) ^