Compilare: main.cpp: In member function 'i64 st::lg2(i64)': main.cpp:171:3: warning: no return statement in function returning non-void [-Wreturn-type] 171 | } | ^ main.cpp: In constructor 'st::st(std::vector<long int, std::allocator<long int> >&)': main.cpp:177:23: warning: comparison of integer expressions of different signedness: 'i64' {aka 'long int'} and 'std::vector<long int, std::allocator<long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 177 | for (i64 i = 0; i < v.size(); i++) { | ~~^~~~~~~~~~ main.cpp:182:40: warning: comparison of integer expressions of different signedness: 'i64' {aka 'long int'} and 'std::vector<long int, std::allocator<long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 182 | for (i64 j = 0; j + (1 << i) - 1 < v.size(); j++) { | ~~~~~~~~~~~~~~~~~^~~~~~~~~~