Compilare: main.cpp: In constructor 'maxSegTree::maxSegTree(int)': main.cpp:148:8: warning: 'maxSegTree::len' will be initialized after [-Wreorder] 148 | ll len; | ^~~ main.cpp:147:16: warning: 'std::vector<int> maxSegTree::tree' [-Wreorder] 147 | vector<ll> tree; | ^~~~ main.cpp:150:5: warning: when initialized here [-Wreorder] 150 | maxSegTree(ll _len) : len(_len), tree(4 * _len + 1, 0) {} | ^~~~~~~~~~ main.cpp: In function 'void build_heavy_chains(int, int)': main.cpp:291:12: warning: unused variable 'top' [-Wunused-variable] 291 | ll top = label[top_chain[v]]; | ^~~ main.cpp:292:12: warning: unused variable 'bottom' [-Wunused-variable] 292 | ll bottom = label[v]; | ^~~~~~