Compilare: main.cpp: In member function 'void Tree::computeDpNode(int, int)': main.cpp:331:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 331 | for (int i = 0; i < edges_[node].size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:334:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 334 | if (i < edges_[node].size() - 1 && nodes_[next].izo() == nodes_[edges_[node][i + 1]].izo()) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In instantiation of 'static ZP<P> ZP<P>::comb(int, int) [with int P = 1000000007]': main.cpp:338:40: required from here main.cpp:62:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<ZP<1000000007>, std::allocator<ZP<1000000007> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | } else if (n < fact_.size()) { | ~~^~~~~~~~~~~~~~ main.cpp: In instantiation of 'static void ZP<P>::resize_inv(int) [with int P = 1000000007]': main.cpp:398:29: required from here main.cpp:38:30: warning: comparison of integer expressions of different signedness: 'std::vector<ZP<1000000007>, std::allocator<ZP<1000000007> > >::size_type' {aka 'long unsigned int'} and 'const int' [-Wsign-compare] 38 | if (inv_fact_.size() > n) { return; } | ~~~~~~~~~~~~~~~~~^~~ main.cpp: In instantiation of 'ZP<P> ZP<P>::operator/(const ZP<P>&) const [with int P = 1000000007]': main.cpp:402:51: required from here main.cpp:119:22: warning: comparison of integer expressions of different signedness: 'const int' and 'std::vector<ZP<1000000007>, std::allocator<ZP<1000000007> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 119 | if (other.x_ < inv_n_.size()) { | ~~~~~~~~~^~~~~~~~~~~~~~~