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Solved problems:
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ID
Title
Source
Authors
Difficulty
1020
Rope
Autumn School Contest 2000
15365
99
1030
Titanic
Ural Championship 1999
1714
880
1043
Cover an Arc
USU Championship 2000
915
1624
1046
Geometrical Dreams
USU Local Contest. March 2000
784
1869
1052
Rabbit Hunt
USU Local Contest. March 2000
6338
234
1058
Chocolate
NEERC 2000 Central Subregional
519
2794
1065
Frontier
NEERC 2000
997
1393
1075
Thread in a Space
USU Personal Contest 2001
663
2025
1084
Goat in the Garden
Spring School Contest 2001
8955
149
1093
Darts
USU Local Contest. March 2001
636
1966
1103
Pencils and Circles
Tetrahedron Team Online Contest May 2001
968
500
1111
Squares
Bulgarian Online Contest September 2001
1252
389
1130
Nikifor's Walk
USU Championship 2001
516
934
1159
Fence
NEERC 2001 Northern Subregional
647
749
1163
Chapaev
NEERC 2001 Northern Subregional
105
4280
1168
Radio Stations
Romanian Online Contest December 2001
664
730
1170
Desert
Romanian Online Contest December 2001
324
1474
1185
Wall
NEERC 2001
1634
300
1192
Ball in a Dream
Spring School Contest 2002
4555
108
1199
Mouse
128
3396
1207
Median on the Plane
USU Local Contest. March 2002
3949
125
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1654
299
1232
Asteroid Landing
NEERC 2002 Central Subregional
202
2350
1234
Bricks
NEERC 2002
724
679
1239
Ghost Busters
NEERC 2002
152
3078
1246
Tethered Dog
USU Personal Contest 2003
1498
332
1256
Cemetery Guard
USU Local Contest. March 2003
209
2285
1258
Pool
Autumn School Contest 2003
1198
417
1265
Mirror
USU Championship 2003
318
1537
1271
Sailing Directions
USU Championship 2003
97
4712
1281
River Basin
NEERC 2003 Central Subregional
350
1401
1285
Thread in a Hyperspace
USU Personal Contest 2004
301
1628
1294
Mars Satellites
Spring School Contest 2004
1610
313
1305
Convex Hull
Ural Championship 1998
711
703
1308
Dean's Pyramid
Ural Championship 2004. Round 1
167
2864
1312
Tray
Ural Championship 2004. Round 1
159
2999
1317
Hail
Ural Championship 2004. Round 2
465
1067
1328
Fireball
Autumn School Contest 2004
353
1404
1331
Vladislava
Autumn School Contest 2004
500
999
1332
Genie Bomber
Autumn School Contest 2004
809
622
1333
Genie Bomber 2
Autumn School Contest 2004
2341
217
1340
Cucaracha
USU Championship 2004
92
5013
1341
Device
USU Championship 2004
442
1131
1348
Goat in the Garden 2
Spring School Contest 2005
2779
183
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
966
524
1372
Death Star
Ural Championship 2005. Round 1
75
6041
1373
Pictura ex Machina
Ural Championship 2005. Round 1
600
842
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. Moscow+Ural Contest
91
5084
1397
Points Game
271
1703
1405
Goat in the Garden 5
Autumn School Contest 2005
710
713
1412
Autumn Tide
USU Championship 2005
328
1515
1415
Mobile Life
USU Championship 2005
44
9479
1418
Military Story
USU Championship 2005
553
909
1422
Fireflies
Timus Top Coders: First Challenge
570
864
1429
Biscuits
Timus Top Coders: First Challenge
177
2679
1436
Billboard
USU Personal Contest 2006
589
834
1442
Floo Powder
Ural Championship 2006
144
3225
1444
Elephpotamus
Ural Championship 2006
1752
282
1451
Beerhouse Tale
Timus Top Coders: Second Challenge
487
994
1460
Wires
Petrozavodsk Winter 2006. USU Contest
105
4196
1464
Light
Petrozavodsk Winter 2006. USU Contest
156
2907
1469
No Smoking!
Petrozavodsk Summer 2006. Ural+Orel Contest
478
980
1475
Ryaba Hen
Petrozavodsk Summer 2006. Ural+Orel Contest
114
3857
1477
Airplanes
Petrozavodsk Summer 2006. Ural+Orel Contest
149
3008
1482
Triangle Game
USU Championship 2006
146
3058
1489
Points on a Parallelepiped
Autumn School Contest 2006
1210
390
1504
Good Manners
NEERC 2006 Eastern Subregional
203
2230
1514
National Park
Timus Top Coders: Third Challenge
248
1822
1520
Empire Strikes Back
Timus Top Coders: Third Challenge
180
2475
1538
Towers of Guard
USU Personal Contest 2007
351
1282
1550
Dean's Pyramid 3
Ural Championship 2007
762
593
1556
Multishot in the Secret Cow Level
Petrozavodsk Summer 2007. NSU Contest
37
9439
1562
GM-pineapple
USU Championship 2007
1086
404
1566
Triangular Postcards
USU Championship 2007
133
3093
1572
Yekaterinozavodsk Great Well
Autumn School Contest 2007
3044
145
1578
Mammoth Hunt
Autumn School Contest 2007
497
871
1583
Cheese
NEERC 2007 Eastern Subregional
224
1882
1588
Jamaica
NEERC 2007 Eastern Subregional
1354
323
1599
Winding Number
103
1933
1600
Airport
USU Personal Contest 2008
764
554
1616
Square Country 4
Ural Championship 2008
97
3984
1626
Interfering Segment
Petrozavodsk Winter 2008. ITMO Contest
41
8115
1632
Lasers
USU Championship 2008
82
4446
1637
Triangle Game 2
USU Championship 2008
114
3299
1640
Circle of Winter
Autumn School Contest 2008
2351
173
1647
Divide an Island!
Autumn School Contest 2008
483
827
1653
Death Conveyor
NEERC 2008 Eastern Subregional
50
6787
1659
Regular Triangles
NEERC 2008 Eastern Subregional
622
644
1660
The Island of Bad Luck
Petrozavodsk Winter 2008. USU Contest
51
6606
1662
Goat in the Garden 6
Petrozavodsk Winter 2008. USU Contest
77
4632
1679
Scrooge's Tower
Petrozavodsk Summer 2008. USU Contest
389
1005
1681
Brother Bear's Garden
USU Personal Contest 2009
97
3710
1686
Photovoltaic Spaceship
USU Personal Contest 2009
257
1487
1697
Sniper Shot
Petrozavodsk Winter 2009. USU Contest
61
5574
1703
Robotic Arm
Ural Championship 2009
298
1279
1710
Boris, You Are Wrong!
Ural Championship 2009
599
647
1719
Kill the Shaitan-Boss
NEERC 2009 Eastern Subregional
243
1495
1722
Observation Deck
Ural Regional School Programming Contest 2009
276
1320
1733
Forgotten Technology
USU Championship 2009
69
4763
1750
Pakhom and the Gully
Petrozavodsk Summer 2009. Ufa SATU Contest
292
1223
1753
Bookshelf
USU Personal Contest 2010
1116
325
1754
Explosion in a Pyramid
USU Personal Contest 2010
563
638
1768
Circular Strings
Ural Championship 2010
299
1175
1775
Space Bowling
Ural SU Championship 2010
370
918
1793
Tray 2
Ural Regional School Programming Contest 2010
891
386
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
171
1917
1824
Ifrit Bomber
USU Personal Contest 2011
310
1050
1825
Ifrit Bomber 2
USU Personal Contest 2011
362
903
1836
Babel Fish
Ural Championship 2011
282
1140
1839
The Mentaculus
Ural Championship 2011
122
2521
1840
Victim of Advertising
Ural Championship 2011
28
8758
1874
Football Goal
Ural Regional School Programming Contest 2011
1665
191
1875
Angry Birds
Ural Regional School Programming Contest 2011
326
951
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
260
1183
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
202
1504
1909
Space Recon
Ural Championship 2012
57
4372
1913
Titan Ruins: Alignment of Forces
NEERC 2012 Eastern Subregional
149
1839
1919
Titan Ruins: Transformation of Cylinders
NEERC 2012 Eastern Subregional
134
2031
1927
Herbs and Magic
Ural Regional School Programming Contest 2012
271
1039
1938
Caribbean Triangle
Ural FU Championship 2012
49
4930
1955
Boss, I Can See You!
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
80
3059
1956
Fire Signals
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
105
2394
1963
Kite
Ural FU Personal Contest 2013
571
473
1983
Nectar Gathering
Ural FU Championship 2013
158
1586
1988
Planet Ocean Landing
Ural FU Championship 2013
227
1124
2016
Magic and Science
NEERC 2014 Eastern Subregional
19
8334
2032
Conspiracy Theory and Rebranding
Ural Regional School Programming Contest 2014
310
752
2050
3D-modeling
Ural Championship 2015
65
3040
2054
Astronomy
Ural Championship 2015
19
7860
2067
Friends and Berries
Ural Regional School Programming Contest 2015
700
306
2076
Vasiana
Qualification of Eastern Subregional 2015
16
8025
2099
Space Invader
Ural FU Personal Contest 2014
309
626
2101
Knight's Shield
Ural FU Junior Championship 2016
100
1737
2121
Intersection of Parabolas
Petrozavodsk Summer 2018. umnik_team Contest
187
685
2139
Experiment with Juice
Ural School Programming Contest 2019
21
4047
2148
Insane Shot
Ural School Programming Contest 2019
247
488
2154
Flight on a Cannonball
Ural School Programming Contest 2020
33
2294
2165
Cake Cutter
Ural School Programming Contest 2021
15
1926
2166
Two Roads
Ural School Programming Contest 2022
16
1851
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