text: finding x is divisible by 2 or not .
code: if x % 2 == 0 : NEW_LINE INDENT return ( ( fun ( k - 1 ) * 2 ) ^ ( k & 1 ) ) NEW_LINE DEDENT else : NEW_LINE INDENT return ( 2 * fun ( k ) ) NEW_LINE DEDENT def allQueries ( q , l , r ) : NEW_LINE for i in range ( q ) : NEW_LINE INDENT print ( query ( r [ i ] ) ^ query ( l [ i ] - 1 ) ) NEW_LINE DEDENT