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Solved problems:
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ID
Title
Source
Authors
Difficulty
1020
Rope
Autumn School Contest 2000
15337
99
1192
Ball in a Dream
Spring School Contest 2002
4540
108
1207
Median on the Plane
USU Local Contest. March 2002
3925
125
1572
Yekaterinozavodsk Great Well
Autumn School Contest 2007
3038
144
1084
Goat in the Garden
Spring School Contest 2001
8932
149
1640
Circle of Winter
Autumn School Contest 2008
2341
173
1348
Goat in the Garden 2
Spring School Contest 2005
2723
187
1874
Football Goal
Ural Regional School Programming Contest 2011
1657
190
1333
Genie Bomber 2
Autumn School Contest 2004
2337
216
1052
Rabbit Hunt
USU Local Contest. March 2000
6328
233
1444
Elephpotamus
Ural Championship 2006
1743
282
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1652
298
1185
Wall
NEERC 2001
1629
300
2067
Friends and Berries
Ural Regional School Programming Contest 2015
696
303
1294
Mars Satellites
Spring School Contest 2004
1608
312
1588
Jamaica
NEERC 2007 Eastern Subregional
1352
322
1753
Bookshelf
USU Personal Contest 2010
1112
324
1246
Tethered Dog
USU Personal Contest 2003
1496
331
1793
Tray 2
Ural Regional School Programming Contest 2010
889
385
1111
Squares
Bulgarian Online Contest September 2001
1250
388
1489
Points on a Parallelepiped
Autumn School Contest 2006
1208
390
1562
GM-pineapple
USU Championship 2007
1084
403
1258
Pool
Autumn School Contest 2003
1196
416
1963
Kite
Ural FU Personal Contest 2013
571
469
2148
Insane Shot
Ural School Programming Contest 2019
244
482
1103
Pencils and Circles
Tetrahedron Team Online Contest May 2001
965
499
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
966
523
1600
Airport
USU Personal Contest 2008
762
553
1550
Dean's Pyramid 3
Ural Championship 2007
761
592
2099
Space Invader
Ural FU Personal Contest 2014
309
617
1332
Genie Bomber
Autumn School Contest 2004
807
622
1754
Explosion in a Pyramid
USU Personal Contest 2010
562
635
1659
Regular Triangles
NEERC 2008 Eastern Subregional
622
641
1710
Boris, You Are Wrong!
Ural Championship 2009
599
643
1234
Bricks
NEERC 2002
723
678
1305
Convex Hull
Ural Championship 1998
710
701
2121
Intersection of Parabolas
Petrozavodsk Summer 2018. umnik_team Contest
178
702
1405
Goat in the Garden 5
Autumn School Contest 2005
708
713
1168
Radio Stations
Romanian Online Contest December 2001
663
729
1159
Fence
NEERC 2001 Northern Subregional
646
748
2032
Conspiracy Theory and Rebranding
Ural Regional School Programming Contest 2014
306
754
1647
Divide an Island!
Autumn School Contest 2008
479
830
1436
Billboard
USU Personal Contest 2006
586
835
1373
Pictura ex Machina
Ural Championship 2005. Round 1
598
842
1422
Fireflies
Timus Top Coders: First Challenge
564
870
1578
Mammoth Hunt
Autumn School Contest 2007
494
873
1030
Titanic
Ural Championship 1999
1712
878
1825
Ifrit Bomber 2
USU Personal Contest 2011
361
900
1418
Military Story
USU Championship 2005
551
910
1775
Space Bowling
Ural SU Championship 2010
368
916
1130
Nikifor's Walk
USU Championship 2001
514
934
1875
Angry Birds
Ural Regional School Programming Contest 2011
323
952
1469
No Smoking!
Petrozavodsk Summer 2006. Ural+Orel Contest
475
983
1451
Beerhouse Tale
Timus Top Coders: Second Challenge
485
994
1331
Vladislava
Autumn School Contest 2004
500
996
1679
Scrooge's Tower
Petrozavodsk Summer 2008. USU Contest
387
1005
1824
Ifrit Bomber
USU Personal Contest 2011
309
1046
1927
Herbs and Magic
Ural Regional School Programming Contest 2012
266
1049
1317
Hail
Ural Championship 2004. Round 2
458
1079
1988
Planet Ocean Landing
Ural FU Championship 2013
227
1113
1341
Device
USU Championship 2004
442
1128
1836
Babel Fish
Ural Championship 2011
280
1140
1768
Circular Strings
Ural Championship 2010
299
1168
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
258
1183
1750
Pakhom and the Gully
Petrozavodsk Summer 2009. Ufa SATU Contest
290
1224
1538
Towers of Guard
USU Personal Contest 2007
350
1280
1703
Robotic Arm
Ural Championship 2009
295
1285
1722
Observation Deck
Ural Regional School Programming Contest 2009
275
1317
1065
Frontier
NEERC 2000
996
1389
1328
Fireball
Autumn School Contest 2004
352
1403
1281
River Basin
NEERC 2003 Central Subregional
348
1404
1170
Desert
Romanian Online Contest December 2001
321
1482
1686
Photovoltaic Spaceship
USU Personal Contest 2009
256
1484
1719
Kill the Shaitan-Boss
NEERC 2009 Eastern Subregional
241
1498
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
199
1514
1412
Autumn Tide
USU Championship 2005
326
1519
1265
Mirror
USU Championship 2003
316
1541
1983
Nectar Gathering
Ural FU Championship 2013
157
1580
1043
Cover an Arc
USU Championship 2000
914
1620
1285
Thread in a Hyperspace
USU Personal Contest 2004
299
1633
1397
Points Game
271
1696
2166
Two Roads
Ural School Programming Contest 2022
16
1724
2101
Knight's Shield
Ural FU Junior Championship 2016
99
1727
2165
Cake Cutter
Ural School Programming Contest 2021
15
1794
1514
National Park
Timus Top Coders: Third Challenge
248
1815
1913
Titan Ruins: Alignment of Forces
NEERC 2012 Eastern Subregional
149
1824
1046
Geometrical Dreams
USU Local Contest. March 2000
783
1865
1583
Cheese
NEERC 2007 Eastern Subregional
223
1882
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
171
1905
1599
Winding Number
102
1926
1093
Darts
USU Local Contest. March 2001
636
1959
1919
Titan Ruins: Transformation of Cylinders
NEERC 2012 Eastern Subregional
134
2013
1075
Thread in a Space
USU Personal Contest 2001
661
2024
1504
Good Manners
NEERC 2006 Eastern Subregional
202
2232
2154
Flight on a Cannonball
Ural School Programming Contest 2020
32
2274
1256
Cemetery Guard
USU Local Contest. March 2003
209
2277
1232
Asteroid Landing
NEERC 2002 Central Subregional
201
2352
1956
Fire Signals
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
105
2372
1520
Empire Strikes Back
Timus Top Coders: Third Challenge
180
2465
1839
The Mentaculus
Ural Championship 2011
122
2504
1429
Biscuits
Timus Top Coders: First Challenge
177
2670
1058
Chocolate
NEERC 2000 Central Subregional
518
2789
1308
Dean's Pyramid
Ural Championship 2004. Round 1
167
2854
1464
Light
Petrozavodsk Winter 2006. USU Contest
156
2896
1312
Tray
Ural Championship 2004. Round 1
159
2989
1477
Airplanes
Petrozavodsk Summer 2006. Ural+Orel Contest
149
2997
2050
3D-modeling
Ural Championship 2015
64
3045
1482
Triangle Game
USU Championship 2006
146
3046
1955
Boss, I Can See You!
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
79
3065
1239
Ghost Busters
NEERC 2002
151
3087
1566
Triangular Postcards
USU Championship 2007
132
3101
1442
Floo Powder
Ural Championship 2006
144
3213
1637
Triangle Game 2
USU Championship 2008
113
3309
1199
Mouse
126
3432
1681
Brother Bear's Garden
USU Personal Contest 2009
97
3690
1475
Ryaba Hen
Petrozavodsk Summer 2006. Ural+Orel Contest
114
3843
1616
Square Country 4
Ural Championship 2008
96
4003
2139
Experiment with Juice
Ural School Programming Contest 2019
20
4081
1460
Wires
Petrozavodsk Winter 2006. USU Contest
104
4217
1163
Chapaev
NEERC 2001 Northern Subregional
103
4340
1909
Space Recon
Ural Championship 2012
56
4401
1632
Lasers
USU Championship 2008
82
4424
1662
Goat in the Garden 6
Petrozavodsk Winter 2008. USU Contest
76
4662
1271
Sailing Directions
USU Championship 2003
97
4696
1733
Forgotten Technology
USU Championship 2009
69
4736
1938
Caribbean Triangle
Ural FU Championship 2012
48
4972
1340
Cucaracha
USU Championship 2004
92
4997
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. Moscow+Ural Contest
91
5068
1697
Sniper Shot
Petrozavodsk Winter 2009. USU Contest
61
5545
1372
Death Star
Ural Championship 2005. Round 1
75
6021
1660
The Island of Bad Luck
Petrozavodsk Winter 2008. USU Contest
51
6572
1653
Death Conveyor
NEERC 2008 Eastern Subregional
50
6753
2054
Astronomy
Ural Championship 2015
19
7768
2076
Vasiana
Qualification of Eastern Subregional 2015
16
7920
1626
Interfering Segment
Petrozavodsk Winter 2008. ITMO Contest
41
8075
2016
Magic and Science
NEERC 2014 Eastern Subregional
18
8538
1840
Victim of Advertising
Ural Championship 2011
28
8697
1556
Multishot in the Secret Cow Level
Petrozavodsk Summer 2007. NSU Contest
37
9398
1415
Mobile Life
USU Championship 2005
44
9448
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