Compilare: user.cpp: In function ‘int lsb(int)’: user.cpp:20:33: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] inline int lsb(int x) {return (x&(x-1)^x);} ^ user.cpp: In function ‘bool isMinlex(int, int)’: user.cpp:32:6: warning: unused variable ‘i’ [-Wunused-variable] int i,x,y; ^ user.cpp: In function ‘int main()’: user.cpp:5:11: warning: unused variable ‘first’ [-Wunused-variable] #define x first ^ user.cpp:62:8: note: in expansion of macro ‘x’ int n,x,y,i,j,h,s1,s2,ind,p; ^ user.cpp:6:11: warning: unused variable ‘second’ [-Wunused-variable] #define y second ^ user.cpp:62:10: note: in expansion of macro ‘y’ int n,x,y,i,j,h,s1,s2,ind,p; ^ user.cpp:62:24: warning: unused variable ‘ind’ [-Wunused-variable] int n,x,y,i,j,h,s1,s2,ind,p; ^