Compilare: user.cpp: In function ‘void update(int, int)’: user.cpp:12:33: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for (; x <= n; x += x^(x-1) & x) ^ user.cpp: In function ‘int query(int)’: user.cpp:21:28: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for (; x; x -= x^(x-1) & x) ^