Compilare: main.cpp: In member function 'void SparseTable::build(std::vector<long long int>&)': main.cpp:122:50: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 122 | for(ll i = 0; i + p2 - 1 < st[0].size(); i++) | ~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp: In member function 'void Tree::read()': main.cpp:199:20: warning: unused variable 'p' [-Wunused-variable] 199 | ll p = lca->lca(a,b); | ^