Compilare: main.cpp: In function 'std::__cxx11::string getSuffix(std::__cxx11::string)': main.cpp:23:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = word.size() - 2; i < word.size(); i++) ~~^~~~~~~~~~~~~ main.cpp: In function 'void gen(std::__cxx11::string, int)': main.cpp:46:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < trail.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:63:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < result.size(); i++) ~~^~~~~~~~~~~~~~~