Compilare: main.cpp: In function 'int cbin(long long int, const std::vector<long long int>&)': main.cpp:16:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p + i < v.size() && v[p + i] <= x) ~~~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:22:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("asi.in", "r", stdin); ^ main.cpp:23:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("asi.out", "w", stdout); ^