Compilare: main.cpp: In function 'bool check(int)': main.cpp:30:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 30 | auto [x, y] = cd.back(); | ^ main.cpp: In function 'int main()': main.cpp:67:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 67 | auto [x, y] = cd.back(); | ^