Compilare: main.cpp: In constructor 'maxSegTree::maxSegTree(int)': main.cpp:153:8: warning: 'maxSegTree::len' will be initialized after [-Wreorder] 153 | ll len; | ^~~ main.cpp:152:16: warning: 'std::vector<int> maxSegTree::tree' [-Wreorder] 152 | vector<ll> tree; | ^~~~ main.cpp:155:5: warning: when initialized here [-Wreorder] 155 | maxSegTree(ll _len) : len(_len), tree(4 * _len + 1, 0) {} | ^~~~~~~~~~ main.cpp: In function 'void build_heavy_chains(int, int)': main.cpp:296:12: warning: unused variable 'top' [-Wunused-variable] 296 | ll top = label[top_chain[v]]; | ^~~ main.cpp:297:12: warning: unused variable 'bottom' [-Wunused-variable] 297 | ll bottom = label[v]; | ^~~~~~