Compilare: user.cpp: In function ‘int main()’: user.cpp:90:58: warning: overflow in implicit constant conversion [-Woverflow] update_tree (1, 0, N - 1, position, position, INF); ^ user.cpp:74:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("biscuiti.in" ,"r", stdin ); ^ user.cpp:75:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("biscuiti.out","w", stdout); ^ user.cpp:77:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &N); ^ user.cpp:80:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &Array[i]); ^