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Problem set. NEERC Regionals
Solved problems:
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ID
Title
Source
Authors
Difficulty
1053
Pinocchio
NEERC 2000 Central Subregional
4418
339
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2336
640
1055
Combinations
NEERC 2000 Central Subregional
3588
417
1056
Centers of the Net
NEERC 2000 Central Subregional
2730
548
1057
Amount of Degrees
NEERC 2000 Central Subregional
2097
712
1058
Chocolate
NEERC 2000 Central Subregional
525
2799
1059
Expression
NEERC 2000 Central Subregional
2222
672
1133
Fibonacci Sequence
NEERC 2001 Central Subregional
2228
222
1134
Cards
NEERC 2001 Central Subregional
2542
195
1135
Recruits
NEERC 2001 Central Subregional
3091
161
1136
Parliament
NEERC 2001 Central Subregional
4999
99
1137
Bus Routes
NEERC 2001 Central Subregional
1524
325
1138
Integer Percentage
NEERC 2001 Central Subregional
2460
202
1139
City Blocks
NEERC 2001 Central Subregional
6419
77
1140
Swamp Incident
NEERC 2001 Central Subregional
1309
377
1158
Censored!
NEERC 2001 Northern Subregional
976
506
1159
Fence
NEERC 2001 Northern Subregional
653
752
1160
Network
NEERC 2001 Northern Subregional
3306
152
1161
Stripies
NEERC 2001 Northern Subregional
5436
92
1162
Currency Exchange
NEERC 2001 Northern Subregional
2375
209
1163
Chapaev
NEERC 2001 Northern Subregional
109
4189
1164
Fillword
NEERC 2001 Northern Subregional
2420
205
1165
Subnumber
NEERC 2001 Northern Subregional
531
922
1166
Funny Card Game
NEERC 2001 Northern Subregional
133
3568
1224
Spiral
NEERC 2002 Central Subregional
7622
66
1225
Flags
NEERC 2002 Central Subregional
14245
35
1226
esreveR redrO
NEERC 2002 Central Subregional
4456
113
1227
Rally Championship
NEERC 2002 Central Subregional
1663
301
1228
Array
NEERC 2002 Central Subregional
4673
108
1229
Strong Brickwork
NEERC 2002 Central Subregional
1314
381
1230
Introspective Program
NEERC 2002 Central Subregional
653
761
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
224
2155
1232
Asteroid Landing
NEERC 2002 Central Subregional
202
2379
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
734
686
1275
Knights of the Round Table
NEERC 2003 Central Subregional
204
2386
1276
Train
NEERC 2003 Central Subregional
685
735
1277
Cops and Thieves
NEERC 2003 Central Subregional
633
794
1278
“… Connecting People”
NEERC 2003 Central Subregional
509
984
1279
Warehouse
NEERC 2003 Central Subregional
1200
422
1280
Topological Sorting
NEERC 2003 Central Subregional
3587
142
1281
River Basin
NEERC 2003 Central Subregional
362
1372
1282
Game Tree
NEERC 2003 Central Subregional
1506
337
1500
Pass Licenses
NEERC 2006 Eastern Subregional
747
636
1501
Sense of Beauty
NEERC 2006 Eastern Subregional
1798
266
1502
Domino Dots
NEERC 2006 Eastern Subregional
6535
74
1503
Polynomial
NEERC 2006 Eastern Subregional
267
1738
1504
Good Manners
NEERC 2006 Eastern Subregional
207
2219
1505
Oil Transfer
NEERC 2006 Eastern Subregional
155
2918
1506
Columns of Numbers
NEERC 2006 Eastern Subregional
3446
139
1507
Difficult Decision
NEERC 2006 Eastern Subregional
1075
444
1508
Japanese Puzzle
NEERC 2006 Eastern Subregional
287
1621
1509
Domino Recognition
NEERC 2006 Eastern Subregional
127
3514
1510
Order
NEERC 2006 Eastern Subregional
5530
87
1582
Bookmakers
NEERC 2007 Eastern Subregional
3678
121
1583
Cheese
NEERC 2007 Eastern Subregional
228
1879
1584
Pharaohs’ Secrets
NEERC 2007 Eastern Subregional
318
1364
1585
Penguins
NEERC 2007 Eastern Subregional
11791
38
1586
Threeprime Numbers
NEERC 2007 Eastern Subregional
3099
144
1587
Flying Pig
NEERC 2007 Eastern Subregional
541
812
1588
Jamaica
NEERC 2007 Eastern Subregional
1364
326
1589
Sokoban
NEERC 2007 Eastern Subregional
19
15424
1590
Bacon’s Cipher
NEERC 2007 Eastern Subregional
2369
188
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
411
1063
1592
Chinese Watches
NEERC 2007 Eastern Subregional
740
596
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
51
6796
1650
Billionaires
NEERC 2008 Eastern Subregional
2141
193
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1186
347
1652
Banking Crisis
NEERC 2008 Eastern Subregional
142
2727
1653
Death Conveyor
NEERC 2008 Eastern Subregional
52
6686
1654
Cipher Message
NEERC 2008 Eastern Subregional
7016
59
1655
Somali Pirates
NEERC 2008 Eastern Subregional
211
1876
1656
Far Away Kingdom's Army
NEERC 2008 Eastern Subregional
2024
204
1657
Cube Snake
NEERC 2008 Eastern Subregional
263
1519
1658
Sum of Digits
NEERC 2008 Eastern Subregional
2063
200
1659
Regular Triangles
NEERC 2008 Eastern Subregional
632
646
1711
Code Names
NEERC 2009 Eastern Subregional
2918
132
1712
Cipher Grille
NEERC 2009 Eastern Subregional
4568
84
1713
Key Substrings
NEERC 2009 Eastern Subregional
607
625
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
111
3189
1715
Another Ball Killer
NEERC 2009 Eastern Subregional
375
1002
1716
Alternative Solution
NEERC 2009 Eastern Subregional
491
770
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
165
2205
1718
Rejudge
NEERC 2009 Eastern Subregional
1260
304
1719
Kill the Shaitan-Boss
NEERC 2009 Eastern Subregional
250
1484
1720
Summit Online Judge
NEERC 2009 Eastern Subregional
383
982
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
658
578
1800
Murphy's Law
NEERC 2010 Eastern Subregional
2095
169
1801
The Revolution Cup
NEERC 2010 Eastern Subregional
54
5548
1802
Cube Puzzle
NEERC 2010 Eastern Subregional
160
2089
1803
The Czechs' Rifles
NEERC 2010 Eastern Subregional
497
700
1804
The Machinegunners in a Playoff
NEERC 2010 Eastern Subregional
875
401
1805
Chapaev and a Cipher Grille
NEERC 2010 Eastern Subregional
346
997
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1751
202
1807
Cartridges for Maxim
NEERC 2010 Eastern Subregional
232
1467
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
172
1951
1809
Chapaev and Potatoes
NEERC 2010 Eastern Subregional
593
589
1885
Passenger Comfort
NEERC 2011 Eastern Subregional
1672
195
1886
Trip 2
NEERC 2011 Eastern Subregional
148
2072
1887
Frequent Flyer Card
NEERC 2011 Eastern Subregional
297
1066
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
706
457
1889
Airport Announcements
NEERC 2011 Eastern Subregional
1091
297
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
705
458
1891
Language Ocean
NEERC 2011 Eastern Subregional
465
689
1892
Morning in Koltsovo
NEERC 2011 Eastern Subregional
363
878
1893
A380
NEERC 2011 Eastern Subregional
5611
58
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
214
1461
1895
Steaks on Board
NEERC 2011 Eastern Subregional
142
2153
1910
Titan Ruins: Hidden Entrance
NEERC 2012 Eastern Subregional
9032
33
1911
Titan Ruins: Overtaking Fire
NEERC 2012 Eastern Subregional
56
4563
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
230
1255
1913
Titan Ruins: Alignment of Forces
NEERC 2012 Eastern Subregional
151
1871
1914
Titan Ruins: Serial Control
NEERC 2012 Eastern Subregional
58
4429
1915
Titan Ruins: Reconstruction of Bygones
NEERC 2012 Eastern Subregional
1387
216
1916
Titan Ruins: Waiting for Stability
NEERC 2012 Eastern Subregional
82
3273
1917
Titan Ruins: Deadly Accuracy
NEERC 2012 Eastern Subregional
1290
232
1918
Titan Ruins: Artful Manipulations
NEERC 2012 Eastern Subregional
315
927
1919
Titan Ruins: Transformation of Cylinders
NEERC 2012 Eastern Subregional
135
2077
1920
Titan Ruins: the Infinite Power of Magic
NEERC 2012 Eastern Subregional
413
712
1990
Podracing
NEERC 2013 Eastern Subregional
256
1034
1991
The battle near the swamp
NEERC 2013 Eastern Subregional
5894
47
1992
CVS
NEERC 2013 Eastern Subregional
719
377
1993
This cheeseburger you don't need
NEERC 2013 Eastern Subregional
1387
197
1994
The Emperor's plan
NEERC 2013 Eastern Subregional
254
1042
1995
Illegal spices
NEERC 2013 Eastern Subregional
450
598
1996
Cipher Message 3
NEERC 2013 Eastern Subregional
214
1228
1997
Those are not the droids you're looking for
NEERC 2013 Eastern Subregional
500
539
1998
The old Padawan
NEERC 2013 Eastern Subregional
747
363
1999
The secret module
NEERC 2013 Eastern Subregional
30
6874
2012
About Grisha N.
NEERC 2014 Eastern Subregional
15225
16
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
260
930
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
458
537
2015
Zhenya moves from the dormitory
NEERC 2014 Eastern Subregional
842
295
2016
Magic and Science
NEERC 2014 Eastern Subregional
19
8658
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
179
1329
2018
The Debut Album
NEERC 2014 Eastern Subregional
2497
100
2019
Pair: normal and paranormal
NEERC 2014 Eastern Subregional
880
282
2020
Traffic Jam in Flower Town
NEERC 2014 Eastern Subregional
1623
154
2021
Scarily interesting!
NEERC 2014 Eastern Subregional
554
445
2022
Riding a Toad
NEERC 2014 Eastern Subregional
58
3693
2023
Donald is a postman
NEERC 2014 Eastern Subregional
6595
38
2074
Timus problems classifier
Qualification of Eastern Subregional 2015
215
971
2075
Take care of your eyebrows!
Qualification of Eastern Subregional 2015
70
2731
2076
Vasiana
Qualification of Eastern Subregional 2015
17
8091
2077
Reductions
Qualification of Eastern Subregional 2015
18
7802
2190
Match of the Millennium
ICPC Ural Regional Contest Qualifier 2022
7
1858
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
7
1850
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
12
1436
2193
Old Barabarian Rap
ICPC Ural Regional Contest Qualifier 2022
6
1965
2194
Snakes&Snakes
ICPC Ural Regional Contest Qualifier 2023
19
1090
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
7
1859
2196
Apocalypse
ICPC Ural Regional Contest Qualifier 2023
6
1963
2197
Work is not a wolf; a wolf is to walk
ICPC Ural Regional Contest Qualifier 2024
4
2257
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
8
1750
2199
Company Question
ICPC Ural Regional Contest Qualifier 2024
9
1663
Solved problems:
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