Compilare: main.cpp: In function 'std::vector<int> Z(std::__cxx11::string, const string&)': main.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < s.size() && s[i] == s[i-1]; ++i, ++z[1]); ~~^~~~~~~~~~ main.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i < s.size(); ++i) ~~^~~~~~~~~~ main.cpp:26:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(dr < s.size() && s[dr] == s[dr-i]) ~~~^~~~~~~~~~ main.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ret.size(); ++i) ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:58:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < rasp.size(); ++i) ~~^~~~~~~~~~~~~