Compilare: user.cpp: In function ‘std::vector<int> prefix(std::string)’: user.cpp:15:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i < str.size(); i++){ ^ user.cpp: In function ‘int solve(std::string, std::string, std::string, std::vector<int>)’: user.cpp:35:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < B.size(); ++i) { ^ user.cpp:45:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < B.size(); i++) { ^ user.cpp:46:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == B.size() - 1 || match[i + 1] != match[i] + 1) { ^ user.cpp:48:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sol >= curr + per.size() - 1) ^ user.cpp: In function ‘void printv(std::vector<int>)’: user.cpp:65:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < weap.size(); i++) ^