Compilare: main.cpp: In constructor 'BoundingBox::BoundingBox()': main.cpp:49:9: warning: 'BoundingBox::color' is initialized with itself [-Winit-self] 49 | BoundingBox(): | ^~~~~~~~~~~ main.cpp: In function 'void build_solution()': main.cpp:128:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<BoundingBox>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 128 | for (int i = 0; i < bbs.size() && !found; i++) { | ~~^~~~~~~~~~~~ main.cpp:130:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<BoundingBox>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for (int j = 0; j < bbs.size() && !found; j++) { | ~~^~~~~~~~~~~~ main.cpp:132:59: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<BoundingBox>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 132 | for (int k = 0; k < bbs.size() && !found; k++) { | ~~^~~~~~~~~~~~ main.cpp: In instantiation of 'void FenwickTree2D<Type>::Add(int, int, int) [with Type = long int]': main.cpp:111:12: required from here main.cpp:25:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<long int, std::allocator<long int> >, std::allocator<std::vector<long int, std::allocator<long int> > > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for (int i = x; i < bit.size(); i += i&-i) { | ~~^~~~~~~~~~~~ main.cpp:26:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long int, std::allocator<long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for (int j = y; j < bit[i].size(); j += j&-j) { | ~~^~~~~~~~~~~~~~~