Compilare: main.cpp: In member function 'void lca::init(const std::vector<std::vector<int> >&)': main.cpp:47:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i = 1; (1 << i) <= euler.size(); i++) { | ~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:49:57: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int j = 0; j + (1 << i) - 1 < euler.size(); j++) { | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~