30, 5
1
30 5(20/120) 1 ( 10+2+8) (A) :
nnfnnf
nnnnfnnf
nnnnf
n
n
n
n
25
5,15,14
25log3
32
3201121
log22log)(2log)(
log)(3)(
loglog)(
2
2
+=
+=
+=
+=
+=
(B) )5(2 5loglog nn O=
30, 5
2
() n , : (i) -, 3
4n
8n
, (n).
(ii) B -, 410
n
915
n , (n).
(iii) -, 74n
154n
, O(n).
.