Compilare: user.cpp: In constructor ‘SegTree::SegTree(std::vector<int>, bool (*)(int, int))’: user.cpp:27:28: warning: ‘SegTree::Comparator’ will be initialized after [-Wreorder] bool(*Comparator)(int, int); ^ user.cpp:25:14: warning: ‘std::vector<int> SegTree::v’ [-Wreorder] vector<int> v; ^ user.cpp:73:2: warning: when initialized here [-Wreorder] SegTree(vector<int> V, bool(*c)(int, int)) : Comparator(c), v(V), tree(4 * V.size(), 0) { Build(0, 0, V.size() - 1); } ^ user.cpp: In function ‘void UpdateMaxOneSeq(std::vector<int>&, SegTree&, SegTree&, Seq&)’: user.cpp:101:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (seq.e + 1 <= v.size() - 1) ^ user.cpp: In function ‘void UpdateMaxTwoSeq(std::vector<int>&, SegTree&, SegTree&, Seq&, Seq&, int)’: user.cpp:141:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (seq2.e + 1 <= v.size() - 1) ^ user.cpp: In function ‘int main()’: user.cpp:226:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (seqs[0].s == 0 && seqs[0].e == v.size() - 1) ^ user.cpp:231:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < seqs.size(); i++) ^ user.cpp:169:6: warning: unused variable ‘prev_seq’ [-Wunused-variable] int prev_seq = -1; ^ user.cpp:170:6: warning: unused variable ‘last_pos_i’ [-Wunused-variable] int last_pos_i = -1; ^ user.cpp:174:12: warning: unused variable ‘prev_neg_sum_between’ [-Wunused-variable] long long prev_neg_sum_between = 0; ^