Compilare: user.cpp: In function ‘void update(int, int)’: user.cpp:173:33: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for (; poz<=n; poz=poz+(poz &(poz-1)^poz)) ^ user.cpp: In function ‘int querry(int)’: user.cpp:180:29: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for(; poz; poz=poz-(poz &(poz-1)^poz)) ^ user.cpp: In function ‘int bs(int)’: user.cpp:156:1: warning: control reaches end of non-void function [-Wreturn-type] } ^