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:47:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 47 | for(auto [x, w] : g[node]) { | ^ main.cpp:57:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 57 | auto [plus, atr] = v[i]; | ^ main.cpp:72:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 72 | auto [plus, atr] = v[i]; | ^ main.cpp:87:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 87 | auto [c, x] = v[i]; | ^ main.cpp: In function 'int main()': main.cpp:102:18: warning: unused variable 'x' [-Wunused-variable] 102 | for(int i = 1, x; i < n; i++) | ^