Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:24:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 24 | for(auto [x, w] : g[node]) { | ^ main.cpp:32:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 32 | for(auto [x, add] : v) | ^ main.cpp: In function 'void reroot(int, int, ll, ll)': main.cpp:43:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 43 | for(auto [x, w] : g[node]) { | ^ main.cpp:53:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 53 | auto [plus, atr] = v[i]; | ^ main.cpp:65:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 65 | auto [plus, atr] = v[i]; | ^ main.cpp:75:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 75 | auto [c, x] = v[i]; | ^ main.cpp: In function 'int main()': main.cpp:88:18: warning: unused variable 'x' [-Wunused-variable] 88 | for(int i = 1, x; i < n; i++) | ^