, . ? ? , -. , , . - , , . , , , , .
, , ( ). , (, 10 "") 10 "".
.
. , , , .
. .
, , . , , .
. , . : = kt.
t , , , k. , . , 100 , 100 000 . .
. , , . (n) , f .
. , (n) f(n), , -, O*(f(n)), 1, 2 > 0 0, c1 f(n)) < () < c2 f(n) >= n0. , f(n) , >= n0. () (n) <= f(), , () ( "" n).
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, , , , 0(). 0(2), (2- )/2 ( , , , ). () x O(n3), - 1 , 2.
. , .. .
. : , , . , , , , - , .
, , .
, , , . ; , . , .
. .
.
" 1" , "" .
.
, , n, , X . .
1. = 100.
: = 10010= 1100100,
=>
=> => 2,
X => => 3
=> => 6
=> => 12,
=> => 24,
=> => 25
=> => x50
=> => 100.
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, 8 . , . , .
, = 49 :
7 ( 48 " ") 3 ( , 16 , ). " ", (7 ), 2 ( ).
" ", . . "" , , "", "", . .
2. 23 43 "" .
: 23 43 = 23 + 46 + 184 + 736 = 989.
, .