Compilare: user.cpp: In function ‘std::vector<int> RabinKarp(const string&, const string&)’: user.cpp:18:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < pattern.size(); ++i) ^ user.cpp:23:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < pattern.size(); ++i) ^ user.cpp:28:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < s.size()) ^