Compilare: user.cpp: In function ‘std::vector<int> ZAlgo(const string&)’: user.cpp:23:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 1, lt = 0, rt = 0; k < p.size(); ++k) { ^ user.cpp:26:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i + k < p.size() && p[i] == p[i + k]; ++i); ^ user.cpp:40:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = rt + 1; i < p.size() && p[i] == p[i - k]; ++i); ^ user.cpp: In function ‘BadCharTable buildBadCharTable(const string&)’: user.cpp:55:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < p.size(); ++i) { ^ user.cpp: In function ‘std::pair<int, std::vector<int> > strMatch(const string&, const string&)’: user.cpp:88:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = p.size(); i < s.size(); i += skip) { ^ user.cpp:95:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (numMatches < matches.capacity()) { ^