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Solved problems:
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ID
Title
Source
Authors
Difficulty
1020
Rope
Autumn School Contest 2000
15641
100
1030
Titanic
Ural Championship 1999
1723
896
1043
Cover an Arc
USU Championship 2000
927
1641
1046
Geometrical Dreams
USU Local Contest. March 2000
795
1887
1052
Rabbit Hunt
USU Local Contest. March 2000
6397
237
1058
Chocolate
NEERC 2000 Central Subregional
528
2811
1065
Frontier
NEERC 2000
1009
1408
1075
Thread in a Space
USU Personal Contest 2001
683
2012
1084
Goat in the Garden
Spring School Contest 2001
9141
149
1093
Darts
USU Local Contest. March 2001
641
1996
1103
Pencils and Circles
Tetrahedron Team Online Contest May 2001
984
503
1111
Squares
Bulgarian Online Contest September 2001
1284
388
1130
Nikifor's Walk
USU Championship 2001
521
946
1159
Fence
NEERC 2001 Northern Subregional
656
756
1163
Chapaev
NEERC 2001 Northern Subregional
113
4092
1168
Radio Stations
Romanian Online Contest December 2001
676
734
1170
Desert
Romanian Online Contest December 2001
328
1490
1185
Wall
NEERC 2001
1671
300
1192
Ball in a Dream
Spring School Contest 2002
4612
109
1199
Mouse
131
3406
1207
Median on the Plane
USU Local Contest. March 2002
4176
121
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1679
301
1232
Asteroid Landing
NEERC 2002 Central Subregional
204
2379
1234
Bricks
NEERC 2002
731
688
1239
Ghost Busters
NEERC 2002
154
3108
1246
Tethered Dog
USU Personal Contest 2003
1515
335
1256
Cemetery Guard
USU Local Contest. March 2003
215
2273
1258
Pool
Autumn School Contest 2003
1225
417
1265
Mirror
USU Championship 2003
322
1551
1271
Sailing Directions
USU Championship 2003
101
4640
1281
River Basin
NEERC 2003 Central Subregional
363
1381
1285
Thread in a Hyperspace
USU Personal Contest 2004
306
1636
1294
Mars Satellites
Spring School Contest 2004
1629
316
1305
Convex Hull
Ural Championship 1998
721
708
1308
Dean's Pyramid
Ural Championship 2004. Round 1
171
2860
1312
Tray
Ural Championship 2004. Round 1
162
3010
1317
Hail
Ural Championship 2004. Round 2
472
1074
1328
Fireball
Autumn School Contest 2004
358
1414
1331
Vladislava
Autumn School Contest 2004
512
997
1332
Genie Bomber
Autumn School Contest 2004
828
621
1333
Genie Bomber 2
Autumn School Contest 2004
2384
217
1340
Cucaracha
USU Championship 2004
94
5020
1341
Device
USU Championship 2004
446
1145
1348
Goat in the Garden 2
Spring School Contest 2005
2920
178
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
986
524
1372
Death Star
Ural Championship 2005. Round 1
80
5823
1373
Pictura ex Machina
Ural Championship 2005. Round 1
610
845
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. Moscow+Ural Contest
96
4945
1397
Points Game
274
1725
1405
Goat in the Garden 5
Autumn School Contest 2005
721
717
1412
Autumn Tide
USU Championship 2005
332
1528
1415
Mobile Life
USU Championship 2005
47
9168
1418
Military Story
USU Championship 2005
564
911
1422
Fireflies
Timus Top Coders: First Challenge
585
860
1429
Biscuits
Timus Top Coders: First Challenge
181
2680
1436
Billboard
USU Personal Contest 2006
600
837
1442
Floo Powder
Ural Championship 2006
148
3213
1444
Elephpotamus
Ural Championship 2006
1847
273
1451
Beerhouse Tale
Timus Top Coders: Second Challenge
496
998
1460
Wires
Petrozavodsk Winter 2006. USU Contest
107
4221
1464
Light
Petrozavodsk Winter 2006. USU Contest
160
2905
1469
No Smoking!
Petrozavodsk Summer 2006. Ural+Orel Contest
513
936
1475
Ryaba Hen
Petrozavodsk Summer 2006. Ural+Orel Contest
117
3856
1477
Airplanes
Petrozavodsk Summer 2006. Ural+Orel Contest
151
3042
1482
Triangle Game
USU Championship 2006
147
3111
1489
Points on a Parallelepiped
Autumn School Contest 2006
1252
387
1504
Good Manners
NEERC 2006 Eastern Subregional
208
2232
1514
National Park
Timus Top Coders: Third Challenge
257
1804
1520
Empire Strikes Back
Timus Top Coders: Third Challenge
186
2458
1538
Towers of Guard
USU Personal Contest 2007
359
1286
1550
Dean's Pyramid 3
Ural Championship 2007
777
597
1556
Multishot in the Secret Cow Level
Petrozavodsk Summer 2007. NSU Contest
39
9302
1562
GM-pineapple
USU Championship 2007
1115
404
1566
Triangular Postcards
USU Championship 2007
136
3113
1572
Yekaterinozavodsk Great Well
Autumn School Contest 2007
3088
147
1578
Mammoth Hunt
Autumn School Contest 2007
504
883
1583
Cheese
NEERC 2007 Eastern Subregional
230
1886
1588
Jamaica
NEERC 2007 Eastern Subregional
1376
327
1599
Winding Number
117
1854
1600
Airport
USU Personal Contest 2008
782
557
1616
Square Country 4
Ural Championship 2008
99
4026
1626
Interfering Segment
Petrozavodsk Winter 2008. ITMO Contest
45
7758
1632
Lasers
USU Championship 2008
83
4538
1637
Triangle Game 2
USU Championship 2008
115
3376
1640
Circle of Winter
Autumn School Contest 2008
2386
176
1647
Divide an Island!
Autumn School Contest 2008
494
835
1653
Death Conveyor
NEERC 2008 Eastern Subregional
53
6670
1659
Regular Triangles
NEERC 2008 Eastern Subregional
637
649
1660
The Island of Bad Luck
Petrozavodsk Winter 2008. USU Contest
54
6501
1662
Goat in the Garden 6
Petrozavodsk Winter 2008. USU Contest
80
4623
1679
Scrooge's Tower
Petrozavodsk Summer 2008. USU Contest
394
1025
1681
Brother Bear's Garden
USU Personal Contest 2009
101
3695
1686
Photovoltaic Spaceship
USU Personal Contest 2009
261
1514
1697
Sniper Shot
Petrozavodsk Winter 2009. USU Contest
64
5527
1703
Robotic Arm
Ural Championship 2009
313
1261
1710
Boris, You Are Wrong!
Ural Championship 2009
610
657
1719
Kill the Shaitan-Boss
NEERC 2009 Eastern Subregional
253
1490
1722
Observation Deck
Ural Regional School Programming Contest 2009
280
1349
1733
Forgotten Technology
USU Championship 2009
73
4698
1750
Pakhom and the Gully
Petrozavodsk Summer 2009. Ufa SATU Contest
293
1265
1753
Bookshelf
USU Personal Contest 2010
1139
330
1754
Explosion in a Pyramid
USU Personal Contest 2010
576
647
1768
Circular Strings
Ural Championship 2010
308
1186
1775
Space Bowling
Ural SU Championship 2010
375
943
1793
Tray 2
Ural Regional School Programming Contest 2010
909
394
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
174
1964
1824
Ifrit Bomber
USU Personal Contest 2011
320
1062
1825
Ifrit Bomber 2
USU Personal Contest 2011
369
925
1836
Babel Fish
Ural Championship 2011
287
1170
1839
The Mentaculus
Ural Championship 2011
125
2573
1840
Victim of Advertising
Ural Championship 2011
31
8473
1874
Football Goal
Ural Regional School Programming Contest 2011
1705
195
1875
Angry Birds
Ural Regional School Programming Contest 2011
334
972
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
266
1211
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
219
1458
1909
Space Recon
Ural Championship 2012
61
4344
1913
Titan Ruins: Alignment of Forces
NEERC 2012 Eastern Subregional
152
1901
1919
Titan Ruins: Transformation of Cylinders
NEERC 2012 Eastern Subregional
136
2109
1927
Herbs and Magic
Ural Regional School Programming Contest 2012
272
1090
1938
Caribbean Triangle
Ural FU Championship 2012
52
4942
1955
Boss, I Can See You!
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
81
3199
1956
Fire Signals
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
110
2426
1963
Kite
Ural FU Personal Contest 2013
587
487
1983
Nectar Gathering
Ural FU Championship 2013
161
1652
1988
Planet Ocean Landing
Ural FU Championship 2013
233
1162
2016
Magic and Science
NEERC 2014 Eastern Subregional
21
8333
2032
Conspiracy Theory and Rebranding
Ural Regional School Programming Contest 2014
321
778
2050
3D-modeling
Ural Championship 2015
67
3180
2054
Astronomy
Ural Championship 2015
23
7420
2067
Friends and Berries
Ural Regional School Programming Contest 2015
723
319
2076
Vasiana
Qualification of Eastern Subregional 2015
18
8071
2099
Space Invader
Ural FU Personal Contest 2014
338
624
2101
Knight's Shield
Ural FU Junior Championship 2016
109
1755
2121
Intersection of Parabolas
Petrozavodsk Summer 2018. umnik_team Contest
203
723
2139
Experiment with Juice
Ural School Programming Contest 2019
22
4519
2148
Insane Shot
Ural School Programming Contest 2019
288
485
2154
Flight on a Cannonball
Ural School Programming Contest 2020
37
2519
2165
Cake Cutter
Ural School Programming Contest 2021
27
1865
2166
Two Roads
Ural School Programming Contest 2022
19
2378
2179
Need More Roads
Ural School Programming Contest 2023
7
2404
2186
Hands Up!
Ural School Programming Contest 2024
6
2549
2196
Apocalypse
ICPC Ural Regional Contest Qualifier 2023
8
2263
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