Compilare: main.cpp: In function 'void rmq_sparse_table(std::vector<std::vector<int> >&, const std::vector<int>&, const std::vector<int>&)': main.cpp:16:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (i = 0; i < array.size(); i++) { | ~~^~~~~~~~~~~~~~ main.cpp:21:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (i = 0; i + (1 << j) - 1 < array.size(); i++) { | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'void euler_tour(std::vector<int>&, const std::vector<std::vector<int> >&, std::vector<int>&, std::vector<int>&)': main.cpp:46:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | if ((int)index == graph[node].size()) { | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<int> lca(const std::vector<std::vector<int> >&, const std::vector<std::pair<int, int> >&)': main.cpp:67:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for (int i = 0; i < queries.size(); i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void print_data(std::vector<int>)': main.cpp:114:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 114 | for(int i = 0; i < res.size(); i++){ | ~~^~~~~~~~~~~~