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Problem set. NEERC Regionals
Solved problems:
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difficulty
ID
Title
Source
Authors
Difficulty
1053
Pinocchio
NEERC 2000 Central Subregional
4443
343
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2363
643
1055
Combinations
NEERC 2000 Central Subregional
3605
422
1056
Centers of the Net
NEERC 2000 Central Subregional
2758
551
1057
Amount of Degrees
NEERC 2000 Central Subregional
2119
717
1058
Chocolate
NEERC 2000 Central Subregional
539
2774
1059
Expression
NEERC 2000 Central Subregional
2244
677
1133
Fibonacci Sequence
NEERC 2001 Central Subregional
2247
224
1134
Cards
NEERC 2001 Central Subregional
2563
197
1135
Recruits
NEERC 2001 Central Subregional
3152
160
1136
Parliament
NEERC 2001 Central Subregional
5043
100
1137
Bus Routes
NEERC 2001 Central Subregional
1560
322
1138
Integer Percentage
NEERC 2001 Central Subregional
2481
203
1139
City Blocks
NEERC 2001 Central Subregional
6476
78
1140
Swamp Incident
NEERC 2001 Central Subregional
1319
381
1158
Censored!
NEERC 2001 Northern Subregional
991
506
1159
Fence
NEERC 2001 Northern Subregional
660
756
1160
Network
NEERC 2001 Northern Subregional
3490
147
1161
Stripies
NEERC 2001 Northern Subregional
5466
93
1162
Currency Exchange
NEERC 2001 Northern Subregional
2561
197
1163
Chapaev
NEERC 2001 Northern Subregional
115
4054
1164
Fillword
NEERC 2001 Northern Subregional
2445
206
1165
Subnumber
NEERC 2001 Northern Subregional
535
930
1166
Funny Card Game
NEERC 2001 Northern Subregional
135
3574
1224
Spiral
NEERC 2002 Central Subregional
7750
66
1225
Flags
NEERC 2002 Central Subregional
14648
35
1226
esreveR redrO
NEERC 2002 Central Subregional
4501
114
1227
Rally Championship
NEERC 2002 Central Subregional
1689
302
1228
Array
NEERC 2002 Central Subregional
4722
108
1229
Strong Brickwork
NEERC 2002 Central Subregional
1323
384
1230
Introspective Program
NEERC 2002 Central Subregional
636
793
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
224
2190
1232
Asteroid Landing
NEERC 2002 Central Subregional
205
2383
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
748
684
1275
Knights of the Round Table
NEERC 2003 Central Subregional
206
2401
1276
Train
NEERC 2003 Central Subregional
695
736
1277
Cops and Thieves
NEERC 2003 Central Subregional
588
867
1278
“… Connecting People”
NEERC 2003 Central Subregional
515
988
1279
Warehouse
NEERC 2003 Central Subregional
1215
423
1280
Topological Sorting
NEERC 2003 Central Subregional
3655
141
1281
River Basin
NEERC 2003 Central Subregional
276
1813
1282
Game Tree
NEERC 2003 Central Subregional
1529
337
1500
Pass Licenses
NEERC 2006 Eastern Subregional
753
642
1501
Sense of Beauty
NEERC 2006 Eastern Subregional
1824
267
1502
Domino Dots
NEERC 2006 Eastern Subregional
6616
74
1503
Polynomial
NEERC 2006 Eastern Subregional
272
1737
1504
Good Manners
NEERC 2006 Eastern Subregional
210
2227
1505
Oil Transfer
NEERC 2006 Eastern Subregional
159
2899
1506
Columns of Numbers
NEERC 2006 Eastern Subregional
3554
137
1507
Difficult Decision
NEERC 2006 Eastern Subregional
1093
444
1508
Japanese Puzzle
NEERC 2006 Eastern Subregional
294
1612
1509
Domino Recognition
NEERC 2006 Eastern Subregional
133
3426
1510
Order
NEERC 2006 Eastern Subregional
5647
87
1582
Bookmakers
NEERC 2007 Eastern Subregional
3710
123
1583
Cheese
NEERC 2007 Eastern Subregional
235
1863
1584
Pharaohs’ Secrets
NEERC 2007 Eastern Subregional
327
1354
1585
Penguins
NEERC 2007 Eastern Subregional
12008
38
1586
Threeprime Numbers
NEERC 2007 Eastern Subregional
3152
144
1587
Flying Pig
NEERC 2007 Eastern Subregional
546
821
1588
Jamaica
NEERC 2007 Eastern Subregional
1388
326
1589
Sokoban
NEERC 2007 Eastern Subregional
5
30424
1590
Bacon’s Cipher
NEERC 2007 Eastern Subregional
2428
187
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
421
1059
1592
Chinese Watches
NEERC 2007 Eastern Subregional
759
593
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
51
6953
1650
Billionaires
NEERC 2008 Eastern Subregional
2285
185
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1219
345
1652
Banking Crisis
NEERC 2008 Eastern Subregional
147
2702
1653
Death Conveyor
NEERC 2008 Eastern Subregional
58
6237
1654
Cipher Message
NEERC 2008 Eastern Subregional
7097
60
1655
Somali Pirates
NEERC 2008 Eastern Subregional
219
1852
1656
Far Away Kingdom's Army
NEERC 2008 Eastern Subregional
2050
206
1657
Cube Snake
NEERC 2008 Eastern Subregional
266
1537
1658
Sum of Digits
NEERC 2008 Eastern Subregional
2087
202
1659
Regular Triangles
NEERC 2008 Eastern Subregional
640
653
1711
Code Names
NEERC 2009 Eastern Subregional
2952
134
1712
Cipher Grille
NEERC 2009 Eastern Subregional
4610
86
1713
Key Substrings
NEERC 2009 Eastern Subregional
613
635
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
113
3219
1715
Another Ball Killer
NEERC 2009 Eastern Subregional
383
1007
1716
Alternative Solution
NEERC 2009 Eastern Subregional
525
740
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
169
2212
1718
Rejudge
NEERC 2009 Eastern Subregional
1279
307
1719
Kill the Shaitan-Boss
NEERC 2009 Eastern Subregional
259
1472
1720
Summit Online Judge
NEERC 2009 Eastern Subregional
392
985
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
672
580
1800
Murphy's Law
NEERC 2010 Eastern Subregional
2168
168
1801
The Revolution Cup
NEERC 2010 Eastern Subregional
56
5540
1802
Cube Puzzle
NEERC 2010 Eastern Subregional
161
2138
1803
The Czechs' Rifles
NEERC 2010 Eastern Subregional
506
709
1804
The Machinegunners in a Playoff
NEERC 2010 Eastern Subregional
888
407
1805
Chapaev and a Cipher Grille
NEERC 2010 Eastern Subregional
352
1010
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1905
191
1807
Cartridges for Maxim
NEERC 2010 Eastern Subregional
235
1492
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
180
1924
1809
Chapaev and Potatoes
NEERC 2010 Eastern Subregional
607
593
1885
Passenger Comfort
NEERC 2011 Eastern Subregional
1769
190
1886
Trip 2
NEERC 2011 Eastern Subregional
153
2076
1887
Frequent Flyer Card
NEERC 2011 Eastern Subregional
308
1064
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
728
458
1889
Airport Announcements
NEERC 2011 Eastern Subregional
1102
304
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
725
460
1891
Language Ocean
NEERC 2011 Eastern Subregional
470
705
1892
Morning in Koltsovo
NEERC 2011 Eastern Subregional
370
890
1893
A380
NEERC 2011 Eastern Subregional
5676
60
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
225
1440
1895
Steaks on Board
NEERC 2011 Eastern Subregional
148
2141
1910
Titan Ruins: Hidden Entrance
NEERC 2012 Eastern Subregional
9248
34
1911
Titan Ruins: Overtaking Fire
NEERC 2012 Eastern Subregional
59
4530
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
236
1271
1913
Titan Ruins: Alignment of Forces
NEERC 2012 Eastern Subregional
153
1918
1914
Titan Ruins: Serial Control
NEERC 2012 Eastern Subregional
67
4060
1915
Titan Ruins: Reconstruction of Bygones
NEERC 2012 Eastern Subregional
1400
222
1916
Titan Ruins: Waiting for Stability
NEERC 2012 Eastern Subregional
87
3223
1917
Titan Ruins: Deadly Accuracy
NEERC 2012 Eastern Subregional
1299
239
1918
Titan Ruins: Artful Manipulations
NEERC 2012 Eastern Subregional
320
947
1919
Titan Ruins: Transformation of Cylinders
NEERC 2012 Eastern Subregional
139
2098
1920
Titan Ruins: the Infinite Power of Magic
NEERC 2012 Eastern Subregional
422
724
1990
Podracing
NEERC 2013 Eastern Subregional
261
1058
1991
The battle near the swamp
NEERC 2013 Eastern Subregional
6015
48
1992
CVS
NEERC 2013 Eastern Subregional
750
377
1993
This cheeseburger you don't need
NEERC 2013 Eastern Subregional
1415
201
1994
The Emperor's plan
NEERC 2013 Eastern Subregional
261
1058
1995
Illegal spices
NEERC 2013 Eastern Subregional
461
609
1996
Cipher Message 3
NEERC 2013 Eastern Subregional
218
1258
1997
Those are not the droids you're looking for
NEERC 2013 Eastern Subregional
514
547
1998
The old Padawan
NEERC 2013 Eastern Subregional
759
373
1999
The secret module
NEERC 2013 Eastern Subregional
34
6519
2012
About Grisha N.
NEERC 2014 Eastern Subregional
15757
17
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
266
954
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
472
546
2015
Zhenya moves from the dormitory
NEERC 2014 Eastern Subregional
878
297
2016
Magic and Science
NEERC 2014 Eastern Subregional
25
7524
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
183
1365
2018
The Debut Album
NEERC 2014 Eastern Subregional
2599
101
2019
Pair: normal and paranormal
NEERC 2014 Eastern Subregional
893
292
2020
Traffic Jam in Flower Town
NEERC 2014 Eastern Subregional
1648
159
2021
Scarily interesting!
NEERC 2014 Eastern Subregional
570
454
2022
Riding a Toad
NEERC 2014 Eastern Subregional
60
3762
2023
Donald is a postman
NEERC 2014 Eastern Subregional
6756
39
2074
Timus problems classifier
NEERC 2015 Eastern Subregional Qualifier
222
997
2075
Take care of your eyebrows!
NEERC 2015 Eastern Subregional Qualifier
74
2753
2076
Vasiana
NEERC 2015 Eastern Subregional Qualifier
23
7008
2077
Reductions
NEERC 2015 Eastern Subregional Qualifier
22
7227
2190
Match of the Millennium
ICPC Ural Regional Contest Qualifier 2022
25
1356
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
10
2365
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
31
1157
2193
Old Barabarian Rap
ICPC Ural Regional Contest Qualifier 2022
15
1892
2194
Snakes&Snakes
ICPC Ural Regional Contest Qualifier 2023
44
879
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
12
2157
2196
Apocalypse
ICPC Ural Regional Contest Qualifier 2023
13
2055
2197
Work is not a wolf; a wolf is to walk
ICPC Ural Regional Contest Qualifier 2024
11
2260
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
24
1393
2199
Company Question
ICPC Ural Regional Contest Qualifier 2024
28
1249
2216
Big Elevator
ICPC Ural Regional Contest Qualifier 2025
4
1945
2217
Binary Sort
ICPC Ural Regional Contest Qualifier 2025
9
1433
2218
Prorun
ICPC Ural Regional Contest Qualifier 2025
3
2092
2219
Philosophical Question
ICPC Ural Regional Contest Qualifier 2025
2
2263
2220
Reciprocal of GCD
ICPC Ural Regional Contest Qualifier 2025
4
1942
2221
Convex Hull Treap
ICPC Ural Regional Contest Qualifier 2025
2
2261
2222
Сavalry Battle Advanced
ICPC Ural Regional Contest Qualifier 2025
1
2467
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