Compilare: main.cpp: In constructor 'SegmentTree::SegmentTree(int)': main.cpp:65:15: warning: 'SegmentTree::data_' will be initialized after [-Wreorder] vector<int> data_; ^~~~~ main.cpp:64:7: warning: 'int SegmentTree::treeSize_' [-Wreorder] int treeSize_; ^~~~~~~~~ main.cpp:8:3: warning: when initialized here [-Wreorder] SegmentTree(int k) ^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:70:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("arbint.in", "r", stdin); ^ main.cpp:71:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("arbint.out", "w", stdout); ^ main.cpp:74:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &M); ^ main.cpp:78:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ main.cpp:85:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &op, &a, &b); ^ main.cpp: In member function 'bool SegmentTree::Update_(int, int, int, int&, int&)': main.cpp:51:3: warning: control reaches end of non-void function [-Wreturn-type] } ^