Compilare: main.cpp: In function 'long long int query(long long int)': main.cpp:29:15: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses] k-=k^(k-1)&k; ~~~~~^~ main.cpp: In function 'long long int update(long long int, long long int)': main.cpp:34:27: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses] for(ll i=x;i<=n;i+=i^(i-1)&i){ ~~~~~^~ main.cpp:39:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^