Compilare: main.cpp: In function 'long long int getLevenshtein(std::__cxx11::string, std::__cxx11::string)': main.cpp:27:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < a.size(); i++) ~~^~~~~~~~~~ main.cpp:28:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < b.size(); j++) ~~^~~~~~~~~~ main.cpp:32:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < a.size(); i++) ~~^~~~~~~~~~ main.cpp:34:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; j < b.size(); j++) ~~^~~~~~~~~~ main.cpp:37:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < a.size(); i++) { ~~^~~~~~~~~~ main.cpp:38:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; j < b.size(); j++) { ~~^~~~~~~~~~