sub p{$|=print"? @_\n";<>}

for(0..2){
	$b=p@q=(0)x3;
	$q[$_]=-1;$a=p@q;
	$q[$_]=1;$c=p@q;
	push@w,($c-$a)/(2*$b-$c-$a)/2;
}

print"! @w\n"