Compilare: main.cpp: In function 'void reinsert(std::stack<int>&, std::stack<int>&, int, int)': main.cpp:15:23: warning: comparison of integer expressions of different signedness: 'std::stack<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 15 | while (dq2.size() > sz) | ~~~~~~~~~~~^~~~ main.cpp: In function 'void push()': main.cpp:35:19: warning: comparison of integer expressions of different signedness: 'std::stack<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 35 | if (st.size() < sz / 2) | ~~~~~~~~~~^~~~~~~~