In a town

5 persons live in the same town. Their first names are: Leonid, Vladimir, Nicholas, Oleg and Peter, last names are: Stepanov, Borisov, Kozin, Drozdov and Istomin.

Borisov knows only 2 other persons, while Kozin knows only one.
Peter knows all of them, except one.
Nicholas and Istomin met in their childhood.
Vladimir, Nicholas and Oleg know each other.
Drozdov and Vladimir never met.
Oleg, Nicholas and Borisov often go out to cinema together.

Find out first and last name for every person.

	Leonid	Vladimir	Nicholas	Oleg	Peter
Last name

Your name:

List of Winners

Name	Date	# of attempts	Time spent
Данил Юрьевич	10/31/2012 03:12:11	1	00:09:44
Анна	06/15/2012 12:29:41	1	00:01:14
праерн	12/09/2009 11:58:53	1	00:14:53
BeeАлексу	12/09/2009 11:45:07	1	00:06:08
ксю	11/25/2009 02:35:56	1	20:23:50
Whimsy	05/25/2008 13:55:54	1	00:08:51
PollyMorph	05/03/2008 16:10:05	1	00:20:14
11	03/14/2008 20:03:06	1	00:09:24
VladStar	03/14/2008 00:42:27	1	00:02:15

Statistics

Visitors	Attempts to solve it	Winners	% solved	% cheated	Total time spent	Average time
2265	15	9	60	40	21:36:33	02:24:03.6666

Exercise #54 from "Math. Additional topics." book for 5th grade (2001). Author - Smekalova.E.V.

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