Compilare: user.cpp: In function ‘data query(int, int, int, int, int)’: user.cpp:55:12: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] int m = b + e >> 1, l = v << 1, r = l | 1; ^ user.cpp: In function ‘void update(int, int, int, int, int, int)’: user.cpp:70:12: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] int m = b + e >> 1, l = v << 1, r = l | 1; ^ user.cpp: In function ‘void add_to(int, data, int, int, int, int)’: user.cpp:88:12: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] int m = b + e >> 1, l = v << 1, r = l | 1; ^ user.cpp: In function ‘int main()’: user.cpp:192:12: warning: variable ‘nxbm’ set but not used [-Wunused-but-set-variable] double nxbm = (bl + br) / 2; ^