Compilare: main.cpp: In function 'int main()': main.cpp:90:29: warning: unused variable 'poz' [-Wunused-variable] 90 | int poz = fnwk_cnt.binary_lifting(k); | ^~~ main.cpp: In instantiation of 'void FenwickTree<Type>::add(int, Type) [with Type = int]': main.cpp:86:16: required from here main.cpp:35:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | while (poz<bit.size()) { | ~~~^~~~~~~~~~~ main.cpp: In instantiation of 'void FenwickTree<Type>::add(int, Type) [with Type = long int]': main.cpp:87:16: required from here main.cpp:35:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] main.cpp: In instantiation of 'int FenwickTree<Type>::binary_lifting(int) [with Type = int]': main.cpp:90:37: required from here main.cpp:57:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | if (poz+step<bit.size()&&tgt-bit[poz+step]>0) { | ~~~~~~~~^~~~~~~~~~~