Compilare: user.cpp: In constructor ‘treap::treap(int, treap*, treap*, int)’: user.cpp:13:16: warning: ‘treap::r’ will be initialized after [-Wreorder] treap *l, *r; ^ user.cpp:12:14: warning: ‘int treap::pri’ [-Wreorder] int key, pri, sum; ^ user.cpp:15:5: warning: when initialized here [-Wreorder] treap(int _key = 0, treap *_l = nullptr, treap *_r = nullptr, int _pri = rand()) : ^ user.cpp: In function ‘int main()’: user.cpp:77:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("adunare.in", "r", stdin); ^ user.cpp:78:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("adunare.out", "w", stdout); ^