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2014-08-04T15:12:50+03:00
(2a -256):2-32=17+14

(2a-256):2-32=31

(2a-256):2=31+32

(2a-256):2=63

2a-256=63*2

2a-256=126

2a=126+256

2a=382

a=382:2

a=191
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