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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
4458
343
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2377
641
1055
Combinations
NEERC 2000 Central Subregional
3613
423
1056
Centers of the Net
NEERC 2000 Central Subregional
2773
550
1057
Amount of Degrees
NEERC 2000 Central Subregional
2130
715
1058
Chocolate
NEERC 2000 Central Subregional
547
2742
1059
Expression
NEERC 2000 Central Subregional
2250
677
1133
Fibonacci Sequence
NEERC 2001 Central Subregional
2250
225
1134
Cards
NEERC 2001 Central Subregional
2568
197
1135
Recruits
NEERC 2001 Central Subregional
3159
160
1136
Parliament
NEERC 2001 Central Subregional
5074
100
1137
Bus Routes
NEERC 2001 Central Subregional
1587
318
1138
Integer Percentage
NEERC 2001 Central Subregional
2484
204
1139
City Blocks
NEERC 2001 Central Subregional
6483
78
1140
Swamp Incident
NEERC 2001 Central Subregional
1320
382
1158
Censored!
NEERC 2001 Northern Subregional
1001
503
1159
Fence
NEERC 2001 Northern Subregional
667
751
1160
Network
NEERC 2001 Northern Subregional
3526
145
1161
Stripies
NEERC 2001 Northern Subregional
5477
93
1162
Currency Exchange
NEERC 2001 Northern Subregional
2612
194
1163
Chapaev
NEERC 2001 Northern Subregional
121
3879
1164
Fillword
NEERC 2001 Northern Subregional
2447
207
1165
Subnumber
NEERC 2001 Northern Subregional
539
926
1166
Funny Card Game
NEERC 2001 Northern Subregional
138
3511
1224
Spiral
NEERC 2002 Central Subregional
7758
66
1225
Flags
NEERC 2002 Central Subregional
14686
35
1226
esreveR redrO
NEERC 2002 Central Subregional
4508
114
1227
Rally Championship
NEERC 2002 Central Subregional
1693
302
1228
Array
NEERC 2002 Central Subregional
4729
108
1229
Strong Brickwork
NEERC 2002 Central Subregional
1325
385
1230
Introspective Program
NEERC 2002 Central Subregional
638
793
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
225
2187
1232
Asteroid Landing
NEERC 2002 Central Subregional
207
2368
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
757
678
1275
Knights of the Round Table
NEERC 2003 Central Subregional
216
2301
1276
Train
NEERC 2003 Central Subregional
699
733
1277
Cops and Thieves
NEERC 2003 Central Subregional
590
867
1278
“… Connecting People”
NEERC 2003 Central Subregional
519
983
1279
Warehouse
NEERC 2003 Central Subregional
1220
423
1280
Topological Sorting
NEERC 2003 Central Subregional
3697
140
1281
River Basin
NEERC 2003 Central Subregional
278
1805
1282
Game Tree
NEERC 2003 Central Subregional
1531
337
1500
Pass Licenses
NEERC 2006 Eastern Subregional
756
642
1501
Sense of Beauty
NEERC 2006 Eastern Subregional
1831
267
1502
Domino Dots
NEERC 2006 Eastern Subregional
6631
74
1503
Polynomial
NEERC 2006 Eastern Subregional
277
1712
1504
Good Manners
NEERC 2006 Eastern Subregional
211
2224
1505
Oil Transfer
NEERC 2006 Eastern Subregional
161
2874
1506
Columns of Numbers
NEERC 2006 Eastern Subregional
3565
137
1507
Difficult Decision
NEERC 2006 Eastern Subregional
1095
445
1508
Japanese Puzzle
NEERC 2006 Eastern Subregional
302
1575
1509
Domino Recognition
NEERC 2006 Eastern Subregional
134
3413
1510
Order
NEERC 2006 Eastern Subregional
5659
87
1582
Bookmakers
NEERC 2007 Eastern Subregional
3722
123
1583
Cheese
NEERC 2007 Eastern Subregional
239
1839
1584
Pharaohs’ Secrets
NEERC 2007 Eastern Subregional
332
1339
1585
Penguins
NEERC 2007 Eastern Subregional
12053
38
1586
Threeprime Numbers
NEERC 2007 Eastern Subregional
3166
144
1587
Flying Pig
NEERC 2007 Eastern Subregional
547
822
1588
Jamaica
NEERC 2007 Eastern Subregional
1394
326
1589
Sokoban
NEERC 2007 Eastern Subregional
6
28621
1590
Bacon’s Cipher
NEERC 2007 Eastern Subregional
2448
186
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
428
1046
1592
Chinese Watches
NEERC 2007 Eastern Subregional
770
587
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
52
6868
1650
Billionaires
NEERC 2008 Eastern Subregional
2406
176
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1224
345
1652
Banking Crisis
NEERC 2008 Eastern Subregional
149
2678
1653
Death Conveyor
NEERC 2008 Eastern Subregional
60
6083
1654
Cipher Message
NEERC 2008 Eastern Subregional
7112
60
1655
Somali Pirates
NEERC 2008 Eastern Subregional
222
1835
1656
Far Away Kingdom's Army
NEERC 2008 Eastern Subregional
2067
205
1657
Cube Snake
NEERC 2008 Eastern Subregional
267
1537
1658
Sum of Digits
NEERC 2008 Eastern Subregional
2093
202
1659
Regular Triangles
NEERC 2008 Eastern Subregional
644
651
1711
Code Names
NEERC 2009 Eastern Subregional
2955
134
1712
Cipher Grille
NEERC 2009 Eastern Subregional
4618
86
1713
Key Substrings
NEERC 2009 Eastern Subregional
620
631
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
114
3207
1715
Another Ball Killer
NEERC 2009 Eastern Subregional
384
1009
1716
Alternative Solution
NEERC 2009 Eastern Subregional
530
736
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
170
2209
1718
Rejudge
NEERC 2009 Eastern Subregional
1285
307
1719
Kill the Shaitan-Boss
NEERC 2009 Eastern Subregional
263
1457
1720
Summit Online Judge
NEERC 2009 Eastern Subregional
397
977
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
680
576
1800
Murphy's Law
NEERC 2010 Eastern Subregional
2169
169
1801
The Revolution Cup
NEERC 2010 Eastern Subregional
57
5485
1802
Cube Puzzle
NEERC 2010 Eastern Subregional
164
2112
1803
The Czechs' Rifles
NEERC 2010 Eastern Subregional
508
709
1804
The Machinegunners in a Playoff
NEERC 2010 Eastern Subregional
891
408
1805
Chapaev and a Cipher Grille
NEERC 2010 Eastern Subregional
355
1007
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1970
186
1807
Cartridges for Maxim
NEERC 2010 Eastern Subregional
237
1488
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
184
1894
1809
Chapaev and Potatoes
NEERC 2010 Eastern Subregional
611
592
1885
Passenger Comfort
NEERC 2011 Eastern Subregional
1772
191
1886
Trip 2
NEERC 2011 Eastern Subregional
155
2062
1887
Frequent Flyer Card
NEERC 2011 Eastern Subregional
310
1063
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
730
460
1889
Airport Announcements
NEERC 2011 Eastern Subregional
1106
305
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
726
462
1891
Language Ocean
NEERC 2011 Eastern Subregional
472
706
1892
Morning in Koltsovo
NEERC 2011 Eastern Subregional
375
884
1893
A380
NEERC 2011 Eastern Subregional
5687
60
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
228
1430
1895
Steaks on Board
NEERC 2011 Eastern Subregional
149
2140
1910
Titan Ruins: Hidden Entrance
NEERC 2012 Eastern Subregional
9266
34
1911
Titan Ruins: Overtaking Fire
NEERC 2012 Eastern Subregional
60
4494
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
237
1274
1913
Titan Ruins: Alignment of Forces
NEERC 2012 Eastern Subregional
154
1918
1914
Titan Ruins: Serial Control
NEERC 2012 Eastern Subregional
70
3932
1915
Titan Ruins: Reconstruction of Bygones
NEERC 2012 Eastern Subregional
1401
223
1916
Titan Ruins: Waiting for Stability
NEERC 2012 Eastern Subregional
90
3146
1917
Titan Ruins: Deadly Accuracy
NEERC 2012 Eastern Subregional
1305
239
1918
Titan Ruins: Artful Manipulations
NEERC 2012 Eastern Subregional
327
934
1919
Titan Ruins: Transformation of Cylinders
NEERC 2012 Eastern Subregional
141
2083
1920
Titan Ruins: the Infinite Power of Magic
NEERC 2012 Eastern Subregional
426
722
1990
Podracing
NEERC 2013 Eastern Subregional
262
1062
1991
The battle near the swamp
NEERC 2013 Eastern Subregional
6032
48
1992
CVS
NEERC 2013 Eastern Subregional
773
369
1993
This cheeseburger you don't need
NEERC 2013 Eastern Subregional
1421
202
1994
The Emperor's plan
NEERC 2013 Eastern Subregional
264
1054
1995
Illegal spices
NEERC 2013 Eastern Subregional
465
608
1996
Cipher Message 3
NEERC 2013 Eastern Subregional
222
1245
1997
Those are not the droids you're looking for
NEERC 2013 Eastern Subregional
521
544
1998
The old Padawan
NEERC 2013 Eastern Subregional
762
374
1999
The secret module
NEERC 2013 Eastern Subregional
35
6420
2012
About Grisha N.
NEERC 2014 Eastern Subregional
15828
17
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
271
945
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
475
547
2015
Zhenya moves from the dormitory
NEERC 2014 Eastern Subregional
884
297
2016
Magic and Science
NEERC 2014 Eastern Subregional
26
7375
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
187
1348
2018
The Debut Album
NEERC 2014 Eastern Subregional
2610
101
2019
Pair: normal and paranormal
NEERC 2014 Eastern Subregional
894
294
2020
Traffic Jam in Flower Town
NEERC 2014 Eastern Subregional
1649
160
2021
Scarily interesting!
NEERC 2014 Eastern Subregional
572
456
2022
Riding a Toad
NEERC 2014 Eastern Subregional
61
3739
2023
Donald is a postman
NEERC 2014 Eastern Subregional
6780
39
2074
Timus problems classifier
NEERC 2015 Eastern Subregional Qualifier
230
973
2075
Take care of your eyebrows!
NEERC 2015 Eastern Subregional Qualifier
75
2747
2076
Vasiana
NEERC 2015 Eastern Subregional Qualifier
24
6867
2077
Reductions
NEERC 2015 Eastern Subregional Qualifier
24
6867
2190
Match of the Millennium
ICPC Ural Regional Contest Qualifier 2022
31
1225
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
13
2177
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
42
966
2193
Old Barabarian Rap
ICPC Ural Regional Contest Qualifier 2022
22
1565
2194
Snakes&Snakes
ICPC Ural Regional Contest Qualifier 2023
53
797
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
17
1860
2196
Apocalypse
ICPC Ural Regional Contest Qualifier 2023
17
1853
2197
Work is not a wolf; a wolf is to walk
ICPC Ural Regional Contest Qualifier 2024
14
2092
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
28
1319
2199
Company Question
ICPC Ural Regional Contest Qualifier 2024
30
1255
2216
Big Elevator
ICPC Ural Regional Contest Qualifier 2025
29
770
2217
Binary Sort
ICPC Ural Regional Contest Qualifier 2025
37
639
2218
Prorun
ICPC Ural Regional Contest Qualifier 2025
15
1201
2219
Philosophical Question
ICPC Ural Regional Contest Qualifier 2025
16
1153
2220
Reciprocal of GCD
ICPC Ural Regional Contest Qualifier 2025
21
968
2221
Convex Hull Treap
ICPC Ural Regional Contest Qualifier 2025
10
1498
2222
Сavalry Battle Advanced
ICPC Ural Regional Contest Qualifier 2025
11
1426
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