Eroare de compilare: user.cpp: In function ‘std::vector<int> buildAutomaton(const string&)’: user.cpp:16:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < s.size(); ++i) { ~~^~~~~~~~~~ user.cpp: In function ‘std::pair<std::vector<int>, int> computeMatches(const string&, const string&, int)’: user.cpp:40:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < haystack.size(); ++i) { ~~^~~~~~~~~~~~~~~~~ user.cpp:49:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k == needle.size()) { ~~^~~~~~~~~~~~~~~~ user.cpp:52:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (firstMatches.size() < limit) { ~~~~~~~~~~~~~~~~~~~~^~~~~~~ user.cpp: In function ‘int main()’: user.cpp:65:22: error: variable ‘std::ifstream fin’ has initializer but incomplete type std::ifstream fin("strmatch.in"); ^ user.cpp:66:23: error: variable ‘std::ofstream fout’ has initializer but incomplete type std::ofstream fout("strmatch.out"); ^