Compilare: main.cpp: In constructor 'BinaryIndexTree::BinaryIndexTree(const std::vector<int>&)': main.cpp:13:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for (int i = 0; i < v.size(); ++i) { | ~~^~~~~~~~~~ main.cpp: In member function 'void BinaryIndexTree::update(int, int)': main.cpp:19:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for (; pos <= tree_.size(); pos += (pos & -pos)) { | ~~~~^~~~~~~~~~~~~~~ main.cpp: In member function 'int BinaryIndexTree::findPos(int) const': main.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | if (tIdx > tree_.size()) continue; | ~~~~~^~~~~~~~~~~~~~