Compilare: main.cpp: In function 'void afisare(std::vector<std::__cxx11::list<int> >&)': main.cpp:24:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::list<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i = 1; i<L.size();i++) | ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:50:13: warning: unused variable 'c' [-Wunused-variable] 50 | int N,M,c; | ^