Compilare: main.cpp: In function 'int main()': main.cpp:31:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::queue<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int i=0; i<q.size(); i++){ | ~^~~~~~~~~ main.cpp:18:26: warning: unused variable 'a' [-Wunused-variable] 18 | int cont=1, pp=0,a=0; | ^