Compilare: user.cpp: In function ‘void insert(int, int, int)’: user.cpp:27:33: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] if (b > middle) insert(node << 1 + 1, middle + 1, right); ^ user.cpp: In function ‘void remove(int, int, int)’: user.cpp:42:33: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] if (b > middle) remove(node << 1 + 1, middle + 1, right); ^ user.cpp: In function ‘int query(int, int, int)’: user.cpp:56:53: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] if (a > middle) result = min(result, query(node << 1 + 1, middle + 1, right)); ^ user.cpp: In function ‘int main()’: user.cpp:63:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("invazia.in","r",stdin); ^ user.cpp:64:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("invazia.out","w",stdout); ^