Compilare: main.cpp: In function 'bool Adauga(int)': main.cpp:16:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < h[m].size(); ++i) ~~^~~~~~~~~~~~~ main.cpp: In function 'bool Sterge(int)': main.cpp:31:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < h[m].size(); ++i) ~~^~~~~~~~~~~~~ main.cpp:48:1: warning: control reaches end of non-void function [-Wreturn-type] } ^