Compilare: main.cpp: In member function 'int STree::Tree(std::vector<int>&)': main.cpp:12:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | while (n < A.size()) n *= 2; | ~~^~~~~~~~~~ main.cpp:15:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for (int i = n; i < n + A.size(); ++i) { | ~~^~~~~~~~~~~~~~ main.cpp:21:2: warning: no return statement in function returning non-void [-Wreturn-type] 21 | } | ^ main.cpp: In member function 'int STree::Get(int, int)': main.cpp:27:8: warning: left operand of comma operator has no effect [-Wunused-value] 27 | for (l, r; l <= r; l /= 2, r /= 2) { | ^ main.cpp:27:12: warning: right operand of comma operator has no effect [-Wunused-value] 27 | for (l, r; l <= r; l /= 2, r /= 2) { | ^