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:60:15: warning: statement has no effect [-Wunused-value] cout.fixed; ^ main.cpp:51:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("input", "r", stdin); ^ main.cpp:64:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:68:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^