Compilare: main.cpp: In member function 'void Heap::pop()': main.cpp:19:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(pozitie*2<vec.size()) ~~~~~~~~~^~~~~~~~~~~ main.cpp:22:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(copil_drept>=vec.size()) ~~~~~~~~~~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:91:13: warning: unused variable 'x' [-Wunused-variable] Element x; ^