Compilare: main.cpp: In function 'int main()': main.cpp:39:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i.second.size() > fMax) { ~~~~~~~~~~~~~~~~^~~~~~ main.cpp:42:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] } else if (i.second.size() == fMax) { ~~~~~~~~~~~~~~~~^~~~~~~ main.cpp:48:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i.second.size() == fMax) { ~~~~~~~~~~~~~~~~^~~~~~~