Compilare: main.cpp: In function 'int pop(int, int)': main.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < myHash[key].size(); i++) ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:26:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int insert(int, int)': main.cpp:20:1: warning: control reaches end of non-void function [-Wreturn-type] } ^