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Problem set. Volume 7
Solved problems:
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Volume 6
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ID
Title
Source
Authors
Difficulty
1639
Chocolate 2
Autumn School Contest 2008
12687
32
1607
Taxi
USU Personal Contest 2008
9281
46
1636
Penalty Time
USU Championship 2008
6931
59
1654
Cipher Message
NEERC 2008 Eastern Subregional
6919
58
1617
Flat Spots
Ural Championship 2008
6630
64
1638
Bookworm
USU Championship 2008
6252
65
1601
AntiCAPS
USU Personal Contest 2008
4704
90
1642
1D Maze
Autumn School Contest 2008
4236
95
1644
A Whole Lot of Walnuts
Autumn School Contest 2008
4115
98
1671
Anansi's Cobweb
Petrozavodsk Summer 2008. USU Contest
3433
116
1613
For Fans of Statistics
Ural Championship 2008
3029
139
1688
Team.GOV!
USU Personal Contest 2009
3021
130
1683
Fridge
USU Personal Contest 2009
2972
132
1604
Country of Fools
USU Personal Contest 2008
2934
145
1612
Tram Forum
Ural Championship 2008
2859
148
1628
White Streaks
USU Championship 2008
2364
171
1640
Circle of Winter
Autumn School Contest 2008
2338
173
1685
Orthography
USU Personal Contest 2009
2203
178
1635
Mnemonics and Palindromes
USU Championship 2008
2059
196
1645
Ski Race
Autumn School Contest 2008
2053
196
1658
Sum of Digits
NEERC 2008 Eastern Subregional
2038
197
1650
Billionaires
NEERC 2008 Eastern Subregional
2027
199
1656
Far Away Kingdom's Army
NEERC 2008 Eastern Subregional
1997
202
1680
The First Nonqualifying
USU Personal Contest 2009
1805
217
1603
Erudite
USU Personal Contest 2008
1680
252
1684
Jack's Last Word
USU Personal Contest 2009
1483
264
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1165
344
1648
Yachts
Autumn School Contest 2008
1064
377
1692
Flags for Provinces
Petrozavodsk Winter 2009. USU Contest
1055
369
1643
Attack of the Dark Fortress
Autumn School Contest 2008
954
420
1602
Elevator
USU Personal Contest 2008
942
448
1665
Dean's Financial Pyramid
Petrozavodsk Winter 2008. USU Contest
914
433
1631
Drunk King 2
USU Championship 2008
846
475
1641
Duties
Autumn School Contest 2008
807
496
1600
Airport
USU Personal Contest 2008
762
552
1682
Crazy Professor
USU Personal Contest 2009
727
535
1605
Devil's Sequence
USU Personal Contest 2008
698
602
1690
Army of Mages
Petrozavodsk Winter 2009. USU Contest
625
619
1659
Regular Triangles
NEERC 2008 Eastern Subregional
623
639
1698
Square Country 5
Petrozavodsk Winter 2009. USU Contest
612
632
1611
Decimation
Ural Championship 2008
609
684
1606
Slalom
USU Personal Contest 2008
600
699
1619
Big Brother
Petrozavodsk Winter 2008. ITMO Contest
572
706
1633
Hippogriffs
USU Championship 2008
525
759
1614
National Project “Trams”
Ural Championship 2008
499
832
1629
Trip
USU Championship 2008
484
822
1647
Divide an Island!
Autumn School Contest 2008
479
828
1646
Godzilla Strikes Back!
Autumn School Contest 2008
450
881
1696
Salary for Robots
Petrozavodsk Winter 2009. USU Contest
437
879
1689
Fisherman and Barbell
USU Personal Contest 2009
423
910
1608
Lucky Tickets 2008
Ural Championship 2008
404
1023
1630
Talisman
USU Championship 2008
393
1008
1625
Hankel Matrix
Petrozavodsk Winter 2008. ITMO Contest
388
1033
1679
Scrooge's Tower
Petrozavodsk Summer 2008. USU Contest
386
1006
1627
Join
Petrozavodsk Winter 2008. ITMO Contest
371
1079
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
355
1077
1687
Numismatics for Fun
USU Personal Contest 2009
304
1255
1666
Vasya Ferrari
Petrozavodsk Winter 2008. USU Contest
301
1287
1673
Admission to Exam
Petrozavodsk Summer 2008. USU Contest
300
1285
1669
Universal Word
Petrozavodsk Winter 2008. USU Contest
280
1380
1620
Clever House
Petrozavodsk Winter 2008. ITMO Contest
262
1512
1657
Cube Snake
NEERC 2008 Eastern Subregional
260
1498
1686
Photovoltaic Spaceship
USU Personal Contest 2009
257
1476
1677
Monkey at the Keyboard
Petrozavodsk Summer 2008. USU Contest
246
1556
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
220
1732
1675
Lunar Code 2
Petrozavodsk Summer 2008. USU Contest
209
1819
1655
Somali Pirates
NEERC 2008 Eastern Subregional
207
1864
1610
Cactuses
Ural Championship 2008
206
1961
1670
Asterisk
Petrozavodsk Summer 2008. USU Contest
206
1844
1615
Tram Solitaire
Ural Championship 2008
198
2037
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
195
1952
1667
Square Country 3
Petrozavodsk Winter 2008. USU Contest
192
1981
1634
Spider Mite
USU Championship 2008
175
2196
1652
Banking Crisis
NEERC 2008 Eastern Subregional
139
2715
1609
Tram Tile
Ural Championship 2008
138
2862
1694
Killer Words
Petrozavodsk Winter 2009. USU Contest
131
2787
1695
Work for Robots
Petrozavodsk Winter 2009. USU Contest
126
2889
1622
Endspiel
Petrozavodsk Winter 2008. ITMO Contest
124
3068
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
122
3115
1663
The Hobbit or There and Back Again 2
Petrozavodsk Winter 2008. USU Contest
122
3032
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
114
3169
1637
Triangle Game 2
USU Championship 2008
113
3303
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
98
3705
1616
Square Country 4
Ural Championship 2008
97
3959
1681
Brother Bear's Garden
USU Personal Contest 2009
97
3684
1618
Arrays Printing
Petrozavodsk Winter 2008. ITMO Contest
85
4328
1632
Lasers
USU Championship 2008
83
4369
1621
Definite Integral
Petrozavodsk Winter 2008. ITMO Contest
80
4568
1662
Goat in the Garden 6
Petrozavodsk Winter 2008. USU Contest
77
4600
1624
Go out of here!
Petrozavodsk Winter 2008. ITMO Contest
72
5014
1697
Sniper Shot
Petrozavodsk Winter 2009. USU Contest
62
5458
1668
Death Star 2
Petrozavodsk Winter 2008. USU Contest
60
5717
1678
Space Poker 3
Petrozavodsk Summer 2008. USU Contest
57
5946
1674
Drunk King
Petrozavodsk Summer 2008. USU Contest
56
6036
1660
The Island of Bad Luck
Petrozavodsk Winter 2008. USU Contest
52
6455
1653
Death Conveyor
NEERC 2008 Eastern Subregional
51
6630
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
49
6855
1626
Interfering Segment
Petrozavodsk Winter 2008. ITMO Contest
42
7907
1672
Droid flies
Petrozavodsk Summer 2008. USU Contest
27
10767
1693
Loyd's Problem
Petrozavodsk Winter 2009. USU Contest
26
10916
Solved problems:
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