Compilare: main.cpp: In function 'int binarySearch(std::vector<int>&, int)': main.cpp:36:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(best + (1<<step) < v.size() && v[best + (1<<step)] <= value) best += (1<<step); ~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:140:15: warning: statement has no effect [-Wunused-value] cout.fixed; ^