Compilare: main.cpp: In function 'void HLD::dfs_hld(int, int)': main.cpp:237:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 237 | for(auto &[it, w] : L[u]) { | ^ main.cpp: In function 'void dfs0(int, int)': main.cpp:285:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 285 | for(auto &[it, w] : L[u]) { | ^ main.cpp: In function 'void dfi(int, int)': main.cpp:318:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 318 | for(auto &[it, w] : L[u]) { | ^ main.cpp: In function 'int main()': main.cpp:385:15: warning: division by zero [-Wdiv-by-zero] 385 | a[-1] /= 0; | ~~~~~~^~~~