Compilare: user.cpp: In function ‘int aib_max(int)’: user.cpp:23:12: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] if (n - (n&(n - 1) ^ n) == 0) ^ user.cpp:25:28: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] return max2(aib_max(n - (n&(n - 1) ^ n)), t[n]); ^ user.cpp: In function ‘void update(int, int)’: user.cpp:32:30: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for (; x <= nmax - 1; x += x&(x - 1) ^ x) ^ user.cpp: In function ‘int main()’: user.cpp:164:27: warning: variable ‘time_span’ set but not used [-Wunused-but-set-variable] chrono::duration<double> time_span = chrono::duration_cast<chrono::duration<double>>(t2 - t1); ^