Compilare: main.cpp: In function 'int main()': main.cpp:37:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<drum.size(); i++){ ~^~~~~~~~~~~~ main.cpp:48:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<L[ultim].size(); i++){ ~^~~~~~~~~~~~~~~~ main.cpp:51:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<drum.size(); j++){ ~^~~~~~~~~~~~