, . () +, () -. .
, . -, () , (). +, () , (). .
, .
4.1
-5 | |||||
- | |||||
- | +2 | ||||
+4 | |||||
+1 |
4.1 .
4.1
(4.1)
n, n , ;
n .
:
:
1 .
.
4.2
:
n4 + n1 < n2 + n3 (4.2)
, , , .
|
|
n1 =14 n3 =18
n2 = 17 n4 = 13
13+14 < 17+18
27 < 35
(4.2) , .. .