Compilare: main.cpp: In member function 'void TREE_DIST::RMQ::init(std::vector<TREE_DIST::EULER>)': main.cpp:36:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<TREE_DIST::EULER>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for ( i = 0; i < v.size(); i++ ) | ~~^~~~~~~~~~ main.cpp:38:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<TREE_DIST::EULER>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for ( j = 1; (1 << j) <= v.size(); j++ ) { | ~~~~~~~~~^~~~~~~~~~~ main.cpp:39:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<TREE_DIST::EULER>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for ( i = 0; i <= v.size() - (1 << j); i++ ) | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:44:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<TREE_DIST::EULER>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for ( i = 2; i <= v.size(); i++ ) | ~~^~~~~~~~~~~ main.cpp: In member function 'void TREE_DIST::dfs(int, int, int)': main.cpp:66:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for ( i = 0; i < tree[v].edges.size(); i++ ) { | ~~^~~~~~~~~~~~~~~~~~~~~~