Compilare: main.cpp: In function 'void LCA::init(int, int)': main.cpp:42:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 42 | for(auto [x, c] : g[node]) { | ^ main.cpp: In function 'll PTree::intersect(PTree::mult&, PTree::mult&)': main.cpp:71:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 71 | for(auto [v, f] : x.st) | ^ main.cpp:73:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 73 | for(auto [v, f] : x.st) { | ^ main.cpp: In function 'PTree::mult& PTree::start(int, int)': main.cpp:87:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 87 | for(auto [x, c] : t[node]) | ^ main.cpp: In function 'll PTree::answer(std::vector<int>)': main.cpp:110:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 110 | for(int i = 1; i < nds.size(); i++) { | ~~^~~~~~~~~~~~