Compilare: user.cpp: In function ‘int binarySearch(std::vector<int>&, int)’: user.cpp:31:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(best + (1<<step) < v.size() && v[best + (1<<step)] <= value) best += (1<<step); ~~~~~~~~~~~~~~~~~^~~~~~~~~~ user.cpp: In function ‘void dfs(int, int)’: user.cpp:68:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(newBest >= st.size()) continue; ~~~~~~~~^~~~~~~~~~~~