13 _ _ _40 100 1_2_ 1(1)_(5)(2)_(5)2_(7)1()(15)(1)()_(2)()_(3)()_2()(10)(1)()_(2)()_ 1_2_3_ 1(12)(1)()(2)()(3)()(4)“”()2(12)()(1)()(2)()(3)()(4)()1.21.(1)(2)21.(1)(2)(3)2(1)(2)1.231.(1)(2)(3)(4)2(1)(2)(3)(4)