Compilare: main.cpp: In function 'void dfsi(ll, ll)': main.cpp:48:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 48 | for(auto [it, w] : L[u]) { | ^ main.cpp:53:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(ll i = 0; i < L[u].size(); ++i) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void dfsh(ll, ll)': main.cpp:66:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 66 | for(auto [it, w] : L[u]) { | ^ main.cpp: In function 'void dfs1(ll, ll)': main.cpp:77:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 77 | for(auto [it, w] : L[u]) { | ^ main.cpp:84:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 84 | for(auto [it, w] : L[u]) { | ^ main.cpp: In function 'int main()': main.cpp:149:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 149 | auto [stot, sweight, nr] = query(u, v); | ^