Compilare: user.cpp: In function ‘void prefix(std::string&, int*)’: user.cpp:20:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1, q=-1; i<P.size(); ++i){ ^ user.cpp: In function ‘void rezolva(std::string&, int*, std::vector<int>&)’: user.cpp:29:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0, q=-1; i<s.size(); ++i){ ^ user.cpp:32:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (q+1 == P.size() ){ ^ user.cpp: In function ‘int main()’: user.cpp:49:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vA.size(); ++i){ ^ user.cpp:52:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vB.size(); ++i){ ^ user.cpp:58:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v.size(); ++i){ ^