Compilare: main.cpp: In function 'bool check(int)': main.cpp:50:8: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 50 | auto [level, nod] = *patr.rbegin(); | ^ main.cpp:59:8: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 59 | auto [k, dl] = dsu::join(nod, p[nod]); | ^ main.cpp:22:34: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized] 22 | return (P[u] == u) ? u : (P[u] = rep(P[u])); | ~~~~~~^~~~~~~~~~~~ main.cpp:40:6: note: 'root' was declared here 40 | int root; | ^~~~