Compilare: main.cpp: In function 'mat ori(mat&, mat&)': main.cpp:42:16: warning: moving a local object in a return statement prevents copy elision [-Wpessimizing-move] 42 | return move(ret); | ~~~~^~~~~ main.cpp:42:16: note: remove 'std::move' call main.cpp: In function 'mat sol(int)': main.cpp:55:16: warning: moving a local object in a return statement prevents copy elision [-Wpessimizing-move] 55 | return move(ret); | ~~~~^~~~~ main.cpp:55:16: note: remove 'std::move' call